Search Results (28)

Multipartite Gaussian Einstein–Podolsky–Rosen (EPR) steering is a key resource for quantum networks, but in practice it is strongly degraded by channel loss and excess noise. This motivates the need to distill multipartite Gaussian EPR steering across all relevant mode partitions. Here we propose and analyze a measurement-based noiseless linear amplification (NLA) protocol that distills Gaussian EPR steering in a four-mode square cluster state transmitted through lossy and noisy channels. Starting from a CV cluster shared by a transmitted node A and three local nodes (B, C, and D), we reconstruct the covariance matrix of the Gaussian cluster state and evaluate Gaussian steering monotones for all $(1+1)$, $(1+2)$, and $(1+3)$ bipartitions before and after applying measurement-based NLA. We show that appropriate conditioning on the noisy mode or on selected relay nodes systematically restores and enhances directional steering, extends both one-way and two-way steerable regions, and preserves the monogamy constraints characteristic of Gaussian graph states. Taken together, these results show that measurement-based NLA provides a practical route to distributing robust multipartite steering in CV cluster architectures, thereby strengthening the foundations for continuous-variable quantum information processing. Full article

The concept of correlation appears straightforward: measurement outcomes coincide, and patterns emerge. For any record of events, the coefficients are uniquely determined. Thus, if correlations change spontaneously, as seen in quantum monogamy, then individual behavior must have changed first. Surprisingly, this is not always true. When two observables are mutually exclusive, they cannot coincide objectively and need to be grouped across time. Yet, sectioning the flow of events into “iterations” is not trivial in this case. Even with blind windows of coincidence, the same order of outcomes can produce different coefficients of correlation, depending on the number of joint measurements. Therefore, quantum monogamy can happen with fixed pre-determined events. A new concept (“subjective correlation”) is required to explain this phenomenon. Full article

Microtus ochrogaster, monogamous prairie voles, serve as translational animal models for studying monogamy and pair bonding. Microglia, the resident immune cells of the brain, are one of several cell types still poorly understood in non-classical animal models including prairie voles. Microglia are known to play mechanistic roles in mediating social behaviors using inflammatory signaling, but the relationship between microglia reactivity and pair bonding has not yet been investigated. The present study first developed a robust protocol for quantitative histological visualization of microglia in Microtus ochrogaster. Second, it investigated differences in microglia morphology, a reliable index of microglia reactivity and function, in pair-bonded vs. unpaired voles. Sections containing prefrontal cortex (PFC) and anterior cingulate cortex (ACC) were stained for ionized calcium-binding adaptor molecule I (Iba1) using immunohistochemistry (IHC). IHC results provided evidence for the successful use of murine histological protocols in prairie voles. Quantification results revealed a sexually dimorphic effect of pair bonding on microglia: somas were significantly larger in pair-bonded vs. unpaired females, and somas were significantly smaller in pair-bonded vs. unpaired males. Additionally, somas were significantly larger in unpaired males than females, with larger somas indicating higher microglia reactivity. While conclusions are limited due to the small sample size, results provide novel characterization of microglia morphology in the frontal cortex and elucidate how pair bonding may influence microglia function in a sexually dimorphic manner. Full article

Among the models of romantic relationships, consensual non-monogamy (CNM) is one in which several affective and/or sexual relationships are allowed simultaneously. This type of relationship, still considered non-normative, has experienced a considerable increase in recent years. However, research is still limited, and studies on the subject in Spain are scarce. To better understand the differences and similarities between monogamous and CNM relationships, this study investigated both relational models, divided by sex, for four factors concerning romantic relationships: relationship satisfaction, sexual desire, jealousy, and conflict resolution styles. In a sample of 210 persons, the results showed that CNM females reported significantly higher levels of consensus and dyadic sexual desire than monogamous females. Jealousy levels were similar in both types of relationships. People in CNM relationships displayed greater conflict resolution skills through negotiation and compromise, whereas monogamous females reported using the non-constructive style of conflict engagement more than CNM females and monogamous males. CNM males indicated a greater use of withdrawal compared to CNM females. Overall, females showed more passionate jealousy than males. This investigation highlights the importance of studying romantic relationships and their different models. Full article

‘Marriage equality’ has been a widely used slogan and mobilizing concept for LGBTQ+ rights’ movements across the globe striving for formal recognition for ‘same-sex’ or ‘same-gender’ marriages. In this article, we critically interrogate the terminology and political rationality that have given shape to ‘marriage equality’ campaigns. We demonstrate the structural erasure of non-monogamous relations and populations from the changes hoped for and envisioned in these mobilizations. The lack of any genuine and substantial concern with consensual non-monogamies (CNMs) from most of the literature in the field highlights the close entanglement of marriage with monogamy. As a result, ideas are scarce about how meaningful and adequate legal recognition and social policy provisions for a wide range of intimate, sexual, familial, and/or caring bonds or constellations on the CNM continuum could look like. We argue that the critique of the mononormativity inherent to marriage is fundamental to understanding the role of this in the 21st century. We identify the roots of the mononormativity of marriage in its governmental role as a necropolitical and biopolitical technology, evidenced by its ‘civilizing’ function in white settler colonial projects. Because of this, an expansion of the call for equality to include non-monogamous populations does not resolve but rather aggravates the problem. We conclude that any truly queer politics of CNM consequently needs to be anti-marriage. Full article

An online survey was completed by a convenience sample of 495 students to assess attitude toward polyamorous targets as an outgroup using 0–100 feeling thermometers. Also assessed was the likelihood of dating a polyamorous partner. These two measures were only weakly related for women participants but modestly related for men participants. Overall, feeling thermometer averages were favorable (66%) but dating likelihood was very low, with 89% rating dating a polyamorous partner as unlikely. Women were slightly more favorable toward polyamorous targets than were men but target gender showed no effect (i.e., ratings of polyamorous men were the same as those of polyamorous women). However, men were slightly more willing to date a polyamorous partner than were women. In terms of personality and individual difference variables as predictors of attitudes, authoritarianism, erotophobia–erotophilia, and participant sexual orientation accounted for a quarter of the variance in feeling thermometer ratings of polyamorous targets. Specifically, those who had lower authoritarianism, were more comfortable with sexuality, and were sexual minority in orientation were likely to rate the polyamorous targets the most favorably. Individual difference variables did not predict willingness to date a polyamorous partner consistently across gender and sexual orientation participant subgroups; the most consistent predictors were sociosexuality and erotophobia–erotophilia. This study adds to our knowledge in a nascent area of sexual attitude and discrimination research—it demonstrates the differences between rating an outgroup person and attitude toward engaging with them personally. The latter appears to involve more complexity in terms of the relationship with personality and the type of social perceiver. More research is needed into the differentiation between general ratings of others who engage in non-mainstream, stigmatized sexual practices versus when the ratings involve personal involvement or behavior of the social perceiver (i.e., such as dating). Full article

This paper is a review of the recent literature on attitudes toward consensual non-monogamy (CNM). These attitudes are constrained to evaluations of people who practice CNM, CNM relationships, and CNM concepts; willingness to engage in or personal interest in practicing CNM is not included in this review. Relevant published research was located through database searches, as well as by perusing references and citations. Based on over two dozen investigations, it is concluded that average attitudes toward CNM are around neutral, with some slightly negative and some slightly positive. Studies taking a comparative perspective—whereby monogamous couples are pitted against CNM couples—overwhelmingly find more favorable attitudes toward monogamy. This literature supports assertions of the prevalence of monocentrism/compulsory monogamy. Further, some researchers investigated sociodemographic and psychological variables as predictors of CNM attitudes. Considering demographic characteristics, those who identify as monogamous and heterosexual tend to be more negative toward CNM relative to their counterparts, and most of the research suggests there are no gender differences in CNM attitudes. In terms of psychological variables, those reflecting authoritarian ideological values tended to predict CNM attitudes the best. The psychological variables are interpreted within the broader dual-process motivational model of prejudice with attention to authoritarianism and social dominance. To conclude, measurement issues are discussed, existing instruments are critiqued, and recommendations are made for which instruments are appropriate for different research goals. Specifically, the Attitudes towards Polyamory scale is a concise, unidimensional instrument with sound psychometric properties, making it a good general assessment of polyamory or CNM. Created using excellent test construction techniques, the Multidimensional Measurement of Attitudes toward Consensual Non-Monogamy (MACS) is a very promising belief-based CNM attitudes scale with three factors. Finally, directions for future research are discussed with an emphasis on differentiating between beliefs and attitudes as suggested by attitude theory, with most CNM attitude scales conflating the former with the latter. Full article

While the past two decades have seen an increase in research into both asexuality and polyamory, little is known about their intersection, that is, people who identify as asexual and engage in polyamorous relationships. Using an online survey, we explored the experiences of participants who identify as asexual or on the ace spectrum (e.g., demisexual, gray-asexual) and were in a polyamorous relationship at the time of the survey (N = 321). The majority of our participants identified as White (79.02%), a plurality identified as women (27.1%), and ages ranged from 18 to 53 years old (M = 29.55, SD = 6.77). Two qualitative questions related to motivations for engaging in polyamory were analyzed for this study (N = 224). The first question asked about personal motivations, and the second asked about partner(s)’s influence. Eight codes emerged across the two questions: Needs fulfillment, Exploration/contemplation, Solution to relationship conflict/personal insecurity, a Desire to connect with multiple people, Personal/relationship growth, Rejecting monogamy, Introduced by partner, and Other/no additional context. One additional code was found in Q2: Reluctance/jealousy/distrust. The most common code overall was Exploration/contemplation. Our findings indicate that fulfilling a partner’s sexual needs was not a primary motivating factor for ace individuals engaged in polyamory. Ace individuals were more likely to describe experiences as exploring their identity and fulfilling personal needs for connection and intimacy. These findings indicate that motivations for engaging in polyamory are not solely centered in fulfilling sexual desires, and they may have larger implications for the what the scope of romantic and sexual relationships can look at outside of a monogamous and heteronormative context. Full article

The monogamy property of entanglement is an intriguing feature of multipartite quantum entanglement. Most entanglement measures satisfying the monogamy inequality have turned out to be convex. Whether nonconvex entanglement measures obey the monogamy inequalities remains less known at present. As a well-known measure of entanglement, the logarithmic negativity is not convex. We elucidate the constraints of multi-qubit entanglement based on the logarithmic convex-roof extended negativity (LCREN) and the logarithmic convex-roof extended negativity of assistance (LCRENoA). Using the Hamming weight derived from the binary vector associated with the distribution of subsystems, we establish monogamy inequalities for multi-qubit entanglement in terms of the $\alpha$th-power ($\alpha \ge 4ln2$) of LCREN, and polygamy inequalities utilizing the $\alpha$th-power ($0\le \alpha \le 2$) of LCRENoA. We demonstrate that these inequalities give rise to tighter constraints than the existing ones. Furthermore, our monogamy inequalities are shown to remain valid for the high-dimensional states that violate the CKW monogamy inequality. Detailed examples are presented to illustrate the effectiveness of our results in characterizing the multipartite entanglement distributions. Full article

In the United States, Christianity’s customs, calendar, and behaviors have long influenced scholarship on what religion looks like. Is this template useful for studying other religions, such as Neopaganism? Neopaganism is a set of earth-based, often polytheistic or animistic religions that lack a central authority, organized structure, or accepted texts, and often accept diverse relationships as “families” beyond heteronormative monogamy. In this research, I explore whether measures of religiosity developed on a Christian template can be applied to Neopagans. I utilize Faith Activities In the Home Scale (FAITHS). I apply FAITHS in self-administered questionnaires to a sample of Neopagans from attendees at gatherings called “festivals”, asking about both individual and family experiences. My results indicate that FAITHS can be useful; however, the principal component analysis reveals different item scaling for Neopagans than in the original analysis. My results also support the individualistic nature of Neopaganism when comparing both individual and family-setting results. Full article

Seabirds are compelled to nest on land, away from their feeding areas, which they can only reach by leaving eggs or chicks in the nest, often for long periods of time. For this reason, almost all of them have evolved social monogamy as a reproductive system, cooperation between partners for incubation and chick rearing, and long-lasting pair bonds. Additionally, nesting conditions are essential for successful reproduction, and the nest can be considered a resource if it provides more guarantees in this aspect. As a result, the nest may be a source of contention and intraspecific competition, especially among males. In this work, we analyze long-term data of the Scopoli’s shearwater (Calonectris diomedea) population to address the fitness consequences of nest change regarding survival and reproductive success. We used capture–recapture multistate models and the AICc model selection approach to test three hypotheses: breeding failure triggers nest change; nest change affects breeding success probability; nest change affects survival. Each year, about 5% of the breeders move to a new nest. For males, it was mainly a way to improve their breeding conditions and was observed in their early years as a breeder. Conversely, for females, it was a way to improve their reproductive performance by trying with a new mate after a failure. Males that changed nests improved their breeding success probability. Instead, in females, there was no causal relation between nest change and breeding success, the latter having been more influenced by the intrinsic quality of the female as a breeder. We did not even find a link between nest change and survival. Instead, we demonstrated that reproductive failure could affect the apparent survival of females, probably because it induces breeding dispersal. Full article

Dominant cultural frameworks, laws, and social policy in Southern Europe often stem from and replicate a collective imaginary based on a reproductive, cohabiting, monogamous, and cis-heterosexual couple. Concomitantly, despite significant advances in legislation in recent years, LGBTQ+ intimacies continue to be subject to daily prejudice, violence, and shame. The purpose of this article is to understand how state recognition contributes to the un/doing of the abject culturally attached to LGBTQ+ intimacies; and to examine personal, sociocultural, and legal traits that shape biographies turning intimate citizens into intimate lovers and/or legal strangers. The first part of this chapter involves an outlining of developments regarding law and relational diversity in Portugal. The second part deals with the visibility of non-normative sexuality that is often a target of abject gaze, rejection, and other cultural practices of discrimination. It is suggested that legally recognized marital status can become a way to overcome the abject or the invisible, both in relation to the state and the cultural milieu. We offer the notion of relational performativity and suggest that non-monogamy (even when consensual) is a major cultural source of the relational abject, encapsulating moral panic around the promiscuous, unhealthy, and uncommitted sexual monster. The article finishes with reflections that move beyond the examples provided to dialogue with dissident relationality as a concept that describes the intimate experiences of aging LGBTQ+ people. Full article

The entanglement in multipartite quantum system is hard to characterize and quantify, although it has been intensively studied in bipartite systems. The monogamy of entanglement, as a special property of multipartite systems, shows the distribution of entanglement in the system. In this paper, we investigate the monogamy relations for multi-qubit systems. By using two entangled measures, namely the concurrence C and the negativity $N_c$, we establish tighter monogamy inequalities for their $\alpha$-th power than those in all the existing ones. We also illustrate the tightness of our results for some classes of quantum states. Full article

Genetic diversity plays an important role in the evolution and adaptation of organisms. Losses of genetic diversity make organisms more vulnerable to climate changes and diseases, reducing the viability of small populations. In addition to natural selection, genetic drift, dispersal, inbreeding, and population bottleneck, the social systems of animals may also affect the genetic diversity of populations. We aimed to test the hypothesis that the delayed dispersal of group-living small mammals would reduce genetic diversity through attenuated gene flow but enhance genetic relatedness. We used microsatellite analysis to estimate genetic diversity and the Queller and Goodnight relatedness coefficients of Daurian pikas (Ochotona dauurica) and Mongolian gerbils (Meriones unguiculatus), two socially monogamous small mammals living in social groups in Inner Mongolia, China. The average genetic relatedness of social groups was inversely related to the average genetic diversity of social groups in Daurian pikas but not in Mongolian gerbils, partially supporting our hypothesis. Dispersal following frequent local extinctions resulted in the recolonization of burrow systems by individuals with different genetic makeups, increasing genetic diversity and reducing the genetic relatedness of the social groups of Daurian pikas. On the other hand, delayed short-distance dispersal was sufficient to maintain the high genetic diversity and high genetic relatedness of gerbil social groups independently. Full article

Background: Alt-sex practitioners are a diverse group with diverse unconventional sexual behaviors including consensual non-monogamy (CNM), kink, fetishism, and bondage/discipline dominance/submission, sadomasochism (BDSM). Perhaps because of their openness to non-normative sexuality, these communities often comprise a large proportion of lesbian, gay, bisexual, trans, queer, among others (LGBTQ+) individuals. LGBTQ+ individuals experience higher rates of sexual violence and consent violation than their cisgender, heterosexual peers both inside and outside of formalized alt-sex communities. Pleasure, including but not limited to sexual pleasure, is often a motivator for engaging in sexual and alt-sex activities. This study examines how consent violations influence pleasure among LGBTQ+ alt-sex members. Methods: We conducted an electronic one-time survey of LGBTQ+ alt-sex practitioners (N = 1354). In this study, we analyze open-ended responses for ways pleasure was described in response to questions about consent violations. We use thematic analyses in Dedoose online software. Results: Two subthemes emerged related to the violation itself, (a) pleasure as a motivator for violating consent and (b) pleasure in spite of consent violation. As the second theme that emerged, pleasure was a component of the aftereffects of the violation in two ways: (1) pleasure was reduced or inhibited by consent violations; (2) pleasure was a motivator for healing and advocacy. Conclusions: We discuss practical and research implications based on the complex relationships between violations and pleasure reported by participants. Full article