Non-equilibrium Dynamics in Ultra-Cold Quantum Gases

A special issue of Condensed Matter (ISSN 2410-3896).

Deadline for manuscript submissions: closed (31 March 2025) | Viewed by 873

Special Issue Editors


E-Mail Website
Guest Editor
Physikalisches Institut, Rheinische Friedrich-Wilhelms-Universität Bonn, Nußallee 12, 53115 Bonn, Germany
Interests: non-equilibrium dynamics; driven dissipative systems; ultracold quantum matter; Bose–Einstein condensates; classical and quantum chaos; localization and thermalization in interacting systems
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
Department of Mathematical Sciences, Politecnico di Torino, 10129 Torino, Italy
Interests: non-equilibrium phenomena; dynamical systems; statistical mechanics; exactly solvable models
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Non-equilibrium dynamics in quantum systems is a subject of great interest, with diverse research areas ranging from atomic and molecular physics to condensed matter systems. A number of emerging phenomena have revived interest in quantum dynamics in recent years, including driven-dissipative quantum dynamics; thermalization; many-body localization in isolated quantum systems; far-from-equilibrium quantum dynamics, particularly quench across the quantum critical point; and several intriguing phenomena exhibited by periodically driven quantum systems, such as parametric resonance.

In conventional solid-state systems, it is difficult to observe such dynamical processes directly in experiments. Following the discovery of the Bose-Einstein condensate (BEC) of a dilute atomic vapor in a seminal experiment in 1995, the many-body aspects of coherent matter wave got a new direction for exploration. Subsequently, ultracold atomic systems have become a natural platform for the study of various dynamical phenomena of interacting quantum systems.

We would like to invite you to contribute to a Special Issue of Condensed Matter entitled “Non-equilibrium Dynamics in Ultra-Cold Quantum Gases”. Our aim is to compile scholarly articles that address a wide range of non-equilibrium physics in quantum many-body systems, from fundamental to applied issues, using theoretical, computational, or experimental methods.

You may choose our Joint Special Issue in Entropy.

Dr. Sayak Ray
Prof. Dr. Lamberto Rondoni
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Condensed Matter is an international peer-reviewed open access quarterly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • non-equilibrium dynamics
  • driven-dissipative systems
  • ergodicity and thermalization
  • many-body localization
  • periodically driven systems
  • Kibble&ndash
  • Zurek dynamics
  • many-body quantum scar
  • non-Hermitian systems
  • exceptional point
  • quantum chaos and random matrix theory (RMT)

Benefits of Publishing in a Special Issue

  • Ease of navigation: Grouping papers by topic helps scholars navigate broad scope journals more efficiently.
  • Greater discoverability: Special Issues support the reach and impact of scientific research. Articles in Special Issues are more discoverable and cited more frequently.
  • Expansion of research network: Special Issues facilitate connections among authors, fostering scientific collaborations.
  • External promotion: Articles in Special Issues are often promoted through the journal's social media, increasing their visibility.
  • e-Book format: Special Issues with more than 10 articles can be published as dedicated e-books, ensuring wide and rapid dissemination.

Further information on MDPI's Special Issue policies can be found here.

Published Papers (1 paper)

Order results
Result details
Select all
Export citation of selected articles as:

Research

20 pages, 12787 KiB  
Article
Exploring the Properties of Quantum Scars in a Toy Model
by Sudip Sinha and Subhasis Sinha
Condens. Matter 2025, 10(1), 5; https://doi.org/10.3390/condmat10010005 - 12 Jan 2025
Viewed by 541
Abstract
We introduce the concept of ergodicity and explore its deviation caused by quantum scars in an isolated quantum system, employing a pedagogical approach based on a toy model. Quantum scars, originally identified as traces of classically unstable orbits in certain wavefunctions of chaotic [...] Read more.
We introduce the concept of ergodicity and explore its deviation caused by quantum scars in an isolated quantum system, employing a pedagogical approach based on a toy model. Quantum scars, originally identified as traces of classically unstable orbits in certain wavefunctions of chaotic systems, have recently regained interest for their role in non-ergodic dynamics, as they retain memory of their initial states. We elucidate these features of quantum scars within the same framework of this toy model. The integrable part of the model consists of two large spins, with a classical counterpart, which we combine with a random matrix to induce ergodic behavior. Scarred states can be selectively generated from the integrable spin Hamiltonian by protecting them from the ergodic states using a projector method. Deformed projectors mimic the ‘quantum leakage’ of scarred states, enabling tunable mixing with ergodic states and thereby controlling the degree of scarring. In this simple model, we investigate various properties of quantum scarring and shed light on different aspects of many-body quantum scars observed in more complex quantum systems. Notably, the underlying classicality can be revealed through the entanglement spectrum and the dynamics of ‘out-of-time-ordered correlators’. Full article
(This article belongs to the Special Issue Non-equilibrium Dynamics in Ultra-Cold Quantum Gases)
Show Figures

Figure 1

Back to TopTop