Aneta Wojnar

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Why does nature love spirals? The link to entropy

1 month ago | phys.org | Ahmed Ali |Aneta Wojnar

There are moments in the history of human thought when a simple realization transforms our understanding of reality. A moment when chaos reveals itself as structure, when disorder folds into meaning, and when what seemed like an arbitrary universe unveils itself as a system governed by hidden symmetries.
Foliation-Generating Observers under Lorentz Transformations

Oct 17, 2024 | mdpi.com | Daniel Blixt |Alejandro Cano |Aneta Wojnar |Jiménez Cano

1. IntroductionThe problem of evolving, in time, the metric in General Relativity can be regarded as a Cauchy problem, where the evolution of the system is uniquely given by the initial positions and velocities of the fundamental fields. This accounts for specifying the induced metric γ i j and ∂ t γ i j at a given instant of time, that is, to specify all the metric components and their first time derivatives at a given spatial slice, x 0 = t = constant .
Bose-Einstein condensate and liquid ${\mathrm{He}}^{4}$: Implications of the GUP and modified gravity correspondence

Jun 12, 2024 | link.aps.org | Aneta Wojnar

See Also Click to ExpandArticle Text (Subscription Required) Click to ExpandReferences (Subscription Required) Click to ExpandIssueVol. 109, Iss. 12 — 15 June 2024Access OptionsBuy Article »Log in with individual APS Journal Account »Log in with a username/password provided by your institution »Get access through a U.S. public or high school library »Download & Share××
Unveiling phase space modifications: A clash of modified gravity and the generalized uncertainty principle

Jan 9, 2024 | link.aps.org | Aneta Wojnar

This study explores the link between modified gravity and modifications of phase space volume. Analyzing Fermi gas modifications in the nonrelativistic limit of the Ricci-based gravities, we derive a generalized partition function in the grand-canonical ensemble, connecting modified gravity models with the generalized uncertainty principle.
Fermi gas and modified gravity

Feb 13, 2023 | link.aps.org | Aneta Wojnar

Abstract We derive the equations of state of Fermi gas by maximizing the Fermi-Dirac entropy in modified gravity in the relativistic and nonrelativistic case. It will be demonstrated that the microphysics must depend on a given theory of gravity in order to consistently describe a physical system at a statistical equilibrium state. DOI:https://doi.org/10.1103/PhysRevD.107.044025© 2023 American Physical SocietyGravitation, Cosmology & Astrophysics