Exploring and Constraining Alternative Theories of Gravity

Dear Colleagues,

Unraveling the true nature of gravity is one of the most exciting challenges of our time. Despite the well-known success of Einstein’s Theory of General Relativity, there are some conundrums, including the absence of a fully consistent quantum extension, the need for dark matter and dark energy, the existence of singularities, and the cosmological constant problem. Therefore, alternative scenarios have been proposed in the literature, both extending Einstein’s gravity and replacing it with different descriptions. Fortunately, we live in a multimessenger era, with astrophysical, cosmological, and experimental data from distinct but complementary approaches and sources. These data allow us to constrain alternative theories of gravity and move a step closer to unveiling the nature of gravity.

We are pleased to invite you to submit original research work, reviews, and communications addressing alternative gravity models and theoretical or observational constraints. Predictions of future scientific challenges or new detection methods are also encouraged.

We look forward to receiving your contributions.

Yours faithfully,

Dr. Cláudio Gomes
Dr. Gonzalo J. Olmo
Guest Editors

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