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This https://arxiv.org/abs/2405.14942 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_hept…

Mapping 1+1-dimensional black hole thermodynamics to finite volume effects
Both black hole thermodynamics and finite volume effects in quantum field theory violate the null energy condition. Motivated by this, we compare thermodynamic features between two $1+1$-dimensional systems: (i) a scalar field confined to a periodic spatial interval of length $a$ and tunneling between two degenerate vacua; (ii) a dilatonic black hole at temperature $T$ in the presence of matter fields. If we identify $a\propto T^{-1}$, we find similar thermodynamic behaviour, which suggests som…

Can Gravitational Wave Data Shed Light on Dark Matter Particles ?
Parthasarathi Majumdar
https://arxiv.org/abs/2506.04905 https://arx…

Can Gravitational Wave Data Shed Light on Dark Matter Particles ?
Gravitational wave (GW) data from observed binary black hole coalescences (BBHC), proven to validate the Hawking Area Theorem (HAT) for black hole horizons, has been demonstrated to unambiguously pick theoretically computed logarithmic corrections to the Bekenstein-Hawking Area Formula, which have a {\it negative} coefficient, when combined with the Generalized Second Law of thermodynamics. We propose a composite, `hybrid' approach to quantum gravity black hole entropy calculation, additively c…

Magnetic field dynamics in presence of Hall conductivity, and thermodiffusion
G. S. Bisnovatyi-Kogan, M. V. Glushikhina
https://arxiv.org/abs/2506.02202 ht…

Magnetic field dynamics in presence of Hall conductivity, and thermodiffusion
This anisotropy of kinetic coefficients in presence of a magnetic field is represented by so-called Hall currents, which appear in a collisional medium due to action of the Lorentz force on the charged particles between collisions. In many papers the Hall currents had been considered in different approximate approaches. We derive equations, describing dynamics of the magnetic field in presence of Hall currents, using a standard electrodynamic consideration. We consider collisional media, an…

Universal thermodynamic topological classes of static black holes in Conformal Killing Gravity
Hao Chen, Di Wu, Meng-Yao Zhang, Soroush Zare, Hassan Hassanabadi, Bekir Can L\"utf\"uo\u{g}lu, Zheng-Wen Long
https://arxiv.org/abs/2506.03695

Universal thermodynamic topological classes of static black holes in Conformal Killing Gravity
In this study, we develop a universal thermodynamic topological classes for the static black holes in the context of the Conformal Killing Gravity. Our findings indicate that the Conformal Killing Gravity significantly reconstructs the thermodynamic properties of both the smallest inner black hole state and the largest outer black hole state. Additionally, it considerably alters the thermodynamic stability of black holes across both high-temperature and low-temperature regimes. This analysis sh…

Most oceans over the globe have experienced surface warming during the past century,
but the subpolar Atlantic is quite otherwise.
The sea surface temperature cooling trend to the south of Greenland,
-- known as the North Atlantic Warming Hole,
-- has raised debate over whether it is driven by the slowing of the Atlantic Meridional Overturning Circulation.
Here we use observations as a benchmark and climate models as a tool to demonstrate that only models sim…

Weakened Atlantic Meridional Overturning Circulation causes the historical North Atlantic Warming Hole - Communications Earth & Environment
The North Atlantic Warming Hole is tied to a weakened Atlantic Meridional Overturning Circulation during the past century, according to climate models and observation data.

Verification of the Timing System for the X-ray Imaging and Spectroscopy Mission in the GPS Unsynchronized Mode
Megumi Shidatsu, Yukikatsu Terada, Takashi Kominato, So Kato, Ryohei Sato, Minami Sakama, Takumi Shioiri, Yugo Motogami, Yuuki Niida, Chulsoo Kang, Toshihiro Takagi, Taichi Nakamoto, Chikara Natsukari, Makoto S. Tashiro, Kenichi Toda, Hironori Maejima, Shin Watanabe, Ryo Iizuka, Rie Sato, Chris Baluta, Katsuhiro Hayashi, Tessei Yoshida, Shoji Ogawa, Yoshiaki Kanemaru, Kotaro Fukushima, Akio Hoshino, Hiromitsu Takahashi, Masayoshi Nobukawa, Tsunefumi Mizuno, Kazuhiro Nakazawa, Shinichiro Uno, Ken Ebisawa, Satoshi Eguchi, Satoru Katsuda, Aya Kubota, Naomi Ota, Atsushi Tanimoto, Yuichi Terashima, Yohko Tsuboi, Yuusuke Uchida, Hideki Uchiyama, Shigeo Yamauchi, Tomokage Yoneyama, Satoshi Yamada, Nagomi Uchida, Matt Holland, Michael Loewenstein, Tahir Yaqoob, Eric D. Miller, Robert S. Hill, Efrain C. Perez-Solis, Morgan D. Waddy, Mark Mekosh, Joseph B. Fox, Isabella S. Brewer, Emily Aldoretta, Koji Mukai, Kenji Hamaguchi, Francois Mernier, Anna Ogorzalek, Katja Pottschmidt, Mihoko Yukita
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An atom in front of Lorentz violating Kalb-Ramond black hole background
Anisur Rahaman
https://arxiv.org/abs/2506.01006 https://arxiv…

An atom in front of Lorentz violating Kalb-Ramond black hole background
We investigate the role of Lorentz violation in the acceleration radiation produced when an atom falls into a Kalb-Ramond (KR) black hole and observe that the amplitude and an exponential (Planck-like) factor are both shaped by the Lorentz-violating parameter, indicating a breach of the equivalence principle and resembling characteristics observed in bumblebee gravity models. We further investigate how Lorentz violation and conformal symmetry work together to determine the thermodyn…

Thermodynamics and Shadows of Kerr black holes endowed with a global monopole charge
Balendra Pratap Singh, Md Sabir Ali
https://arxiv.org/abs/2506.02653 h…

Thermodynamics and Shadows of Kerr black holes endowed with a global monopole charge
In this article, we present the thermodynamic and shadow properties of rotating black holes with global monopole charge. The angular diameter of Sgr A$^{*}$ black hole is 48.7 $\pm$ 7 $μas$, which is 8 $kps$ far away having a mass of $M = 4.0_{-0.6}^{+1.1} \times 10^6 M\odot$ as observed by Event Horizon Telescope and for the M87 black hole, the observed angular diameter is $θ_d = 42 \pm 3 μ$as, which is almost $16$ $Mpc$ far away with a mass of $M = (6.5 \pm 0.7) \times 10^9 M_\odot$. The g…

Interior of a black hole in the framework of the scalar quasiparticle model
Sergey Bondarenko, Dima Cheskis, Raghvendra Singh
https://arxiv.org/abs/2506.02944

Interior of a black hole in the framework of the scalar quasiparticle model
We have developed an effective thermodynamic model for a black hole's interior composed of scalar quasiparticles. The proposed interior consists of a core and a crust; the properties of both depend on the kinetics of the quasiparticles. In the core, the quasiparticles possess zero classical kinetic energy; the total potential energy $U(N)$ of the core depends only on the number $N$ of quasiparticles inside it. The thermodynamic description of this state of matter requires the introduction of an…

This https://arxiv.org/abs/2411.06188 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_grqc_…

The thermodynamic profile of AdS black holes in Lorentz-violating Bumblebee and Kalb-Ramond gravity
Lorentz invariance violation (LIV) is a topic of significant interest in quantum gravity and in extensions of the Standard Model of particle physics. Recently, new classes of black hole solutions have been proposed, involving vector fields and rank-two antisymmetric tensor fields that acquire nontrivial vacuum expectation values, resulting in the Bumblebee and Kalb-Ramond (KR) gravity models, respectively. These models exhibit novel geometric structures and differ in notable ways from standard …