Fri - 05/19/23

There is no new related paper today

There is no new related paper today

  1. [2305.10489] - Species Entropy and Thermodynamics - Niccolò Cribiori, Dieter Lust, Carmine Montella

  2. [2305.10591] - Wave Function Renormalization and Flow of Couplings in Asymptotically Safe Quantum Gravity - Hikaru Kawai, Nobuyoshi Ohta

  3. [2305.10635] - Quantum gravity and the measurement problem in quantum mechanics - Edgar Shaghoulian

  4. [2305.10712] - Slow Complexification - Brett McInnes

  5. [2305.10779] - Mixed boundary conditions and Double-trace like deformations in Celestial holography and Wedge-like holography - Machiko Fukada, Akihiro Miyata

  6. [2305.11177] - Imprints of phase transitions on Kasner singularities - Elena Caceres, Sanjit Shashi, Hao-Yu Sun

Thu - 05/18/23

There is no new related paper today

There is no new related paper today

  1. [2305.10224] - Duality Origami: Emergent Ensemble Symmetries in Holography and Swampland - Meer Ashwinkumar, Jacob M. Leedom, Masahito Yamazaki

Wed - 05/17/23

Quantum Gravity Effect in Binary Black Hole Merger

  • Authors: Parthasarathi Majumdar
  • Subjects: General Relativity and Quantum Cosmology (gr-qc)
  • Arxiv link: https://arxiv.org/abs/2305.09391
  • Abstract We present a semi-rigorous justification of Bekenstein’s Generalized Second Law of Thermodynamics applicable to a universe with black holes present, based on a generic quantum gravity formulation of a black hole spacetime, where the bulk Hamiltonian constraint plays a central role. Specializing to Loop Quantum Gravity, and considering the inspiral and post-ringdown stages of binary black hole merger into a remnant black hole, we show that the Generalized Second Law implies a lower bound on the non-perturbative LQG correction to the Bekenstein-Hawking area law for black hole entropy. This lower bound itself is expressed as a function of the Bekenstein-Hawking area formula for entropy. Using the analyses of LIGO-VIRGO-KAGRA data recently performed to verify the Hawking Area Theorem for binary black hole merger, this Loop Quantum Gravity-induced lower bound is shown to be entirely consistent with the data.

Alleviation of anomalies from the non-oscillatory vacuum in loop quantum cosmology

  • Authors: Mercedes Martín-Benito, Rita B. Neves, Javier Olmedo
  • Subjects: General Relativity and Quantum Cosmology (gr-qc)
  • Arxiv link: https://arxiv.org/abs/2305.09599
  • Abstract In this work we investigate observational signatures of a primordial power spectrum with exponential infrared suppression, motivated by the choice of a non-oscillatory vacuum in a bouncing and inflationary geometry within Loop Quantum Cosmology (LQC). We leave the parameter that defines the scale at which suppression occurs free and perform a Bayesian analysis, comparing with CMB data. The data shows a preference for some of the suppression to be within the observable window. Guided by this analysis, we choose concrete illustrative values for this parameter. We show that the model affects only slightly the parity anomaly, but it is capable of alleviating the lensing and power suppression anomalies.

There is no new related paper today

  1. [2305.09187] - Quasinormal modes and grey-body factors of regular black holes with a scalar hair from the Effective Field Theory - R. A. Konoplya

  2. [2305.09631] - Global and Local Stability for Ghosts Coupled to Positive Energy Degrees of Freedom - Cédric Deffayet, Aaron Held, Shinji Mukohyama, Alexander Vikman

  3. [2305.08907] - Newton vs. Coulomb in AdS/CFT and the Weak Gravity Conjecture - Upamanyu Moitra

  4. [2305.08911] - Symmetries and topological operators, on average - Andrea Antinucci, Giovanni Galati, Giovanni Rizi, Marco Serone

  5. [2305.08922] - ‘Grey Galaxies’ as an endpoint of the Kerr-AdS superradiant instability - Seok Kim, Suman Kundu, Eunwoo Lee, Jaeha Lee, Shiraz Minwalla, Chintan Patel

Tue - 05/16/23

There is no new related paper today

There is no new related paper today

  1. [2305.08082] - Tidal forces in the Simpson-Visser black-bounce and wormhole spacetimes - Dhruv Arora, Parth Bambhaniya, Dipanjan Dey, Pankaj S. Joshi

  2. [2305.07701] - Bounds on Field Range for Slowly Varying Positive Potentials - Damian van de Heisteeg, Cumrun Vafa, Max Wiesner, David H. Wu

  3. [2305.07915] - The Weak Gravity Conjecture, Overcharged Shells and Gravitational Traps - Alex Kehagias, Kostas D.Kokkotas, Antonio Riotto, John Taskas, George Tringas

  4. [2305.08297] - Scattering From $(p,q)$-Strings in $\text{AdS}_5 \times \text{S}^5$ - Silviu S. Pufu, Victor A. Rodriguez, Yifan Wang

Mon - 05/15/23

Gödel’s undecidability theorems and the search for a theory of everything

  • Authors: Claus Kiefer
  • Subjects: General Relativity and Quantum Cosmology (gr-qc); High Energy Physics - Theory (hep-th); History and Philosophy of Physics (physics.hist-ph)
  • Arxiv link: https://arxiv.org/abs/2305.07331
  • Abstract I investigate the question whether G"odel’s undecidability theorems play a crucial role in the search for a unified theory of physics. I conclude that unless the structure of space-time is fundamentally discrete we can never decide whether a given theory is the final one or not. This is relevant for both canonical quantum gravity and string theory.

There is no new related paper today

  1. [2305.07436] - Greybody factors emitted by a regular black hole in a non-minimally coupled Einstein-Yang-Mills theory - Ahmad Al-Badawi

  2. [2305.07595] - Towards a bound on the Higgs mass in causal set quantum gravity - Gustavo P. de Brito, Astrid Eichhorn, Ludivine Fausten

  3. [2305.07480] - Bumping into the species scale with the scalar potential - David Andriot

New papers last week