Fri - 04/22/22

There is no new related paper today

Higher spin JT gravity and a matrix model dual

  • Authors: Jorrit Kruthoff
  • Subjects: High Energy Physics - Theory (hep-th); Mathematical Physics (math-ph)
  • Arxiv link: https://arxiv.org/abs/2204.09685
  • Abstract We propose a generalization of the Saad-Shenker-Stanford duality relating matrix models and JT gravity to the case in which the bulk includes higher spin fields. Using a $\textsf{PSL}(N,\mathbb{R})$ BF theory we compute the disk and generalization of the trumpet partition function in this theory. We then study higher genus corrections and show how this differs from the usual JT gravity calculations. In particular, the usual quotient by the mapping class group is not enough to ensure finite answers and so we propose to extend this group with additional elements that make the gluing integrals finite. These elements can be thought of as large higher spin diffeomorphisms. The cylinder contribution to the spectral form factor then behaves as $T^{N-1}$ at late times $T$, signaling a deviation from conventional random matrix theory. To account for this deviation, we propose that the bulk theory is dual to a matrix model consisting of $N-1$ commuting matrices associated to the $N-1$ conserved higher spin charges. We find further evidence for the existence of the additional mapping class group elements by interpreting the bulk gauge theory geometrically and employing the formalism developed by Gomis et al. in the nineties. This formalism introduces additional (auxiliary) boundary times so that each conserved charge generates translations in those new directions. This allows us to find an explicit description for the $\textsf{PSL}(3,\mathbb{R})$ Schwarzian theory for the disk and trumpet and view the additional mapping class group elements as ordinary Dehn twists, but in higher dimensions.

  1. [2204.10150] - Light Deflection by Rotating Regular Black Holes with a Cosmological Constant - A. Belhaj, H. Belmahi, M. Benali, H. El Moumni

  2. [2204.09993] - Type IIB S-folds: flat deformations, holography and stability - Adolfo Guarino, Colin Sterckx

  3. [2204.10249] - Celestial Amplitudes as AdS-Witten Diagrams - Eduardo Casali, Walker Melton, Andrew Strominger

Thu - 04/21/22

There is no new related paper today

There is no new related paper today

  1. [2204.09444] - Effective models of non-singular quantum black holes - Mariano Cadoni, Mauro Oi, Andrea Pierfrancesco Sanna

Wed - 04/20/22

There is no new related paper today

There is no new related paper today

  1. [2204.08480] - Probing Quadratic Gravity with the Event Horizon Telescope - Jesse Daas, Kolja Kuijpers, Frank Saueressig, Michael F. Wondrak, Heino Falcke

  2. [2204.08841] - Event Horizon of a Charged Black Hole Binary Merger - D. Marín Pina, M. Orselli, D. Pica

  3. [2204.08564] - Safe essential scalar-tensor theories - Benjamin Knorr

Tue - 04/19/22

Loop quantum cosmology and its gauge-covariant avatar: a weak curvature relationship

  • Authors: Bao-Fei Li, Parampreet Singh
  • Subjects: General Relativity and Quantum Cosmology (gr-qc)
  • Arxiv link: https://arxiv.org/abs/2204.07589
  • Abstract We explore the relationship between the effective dynamics in standard loop quantum cosmology (LQC) based on holonomies and triads obtained from gauge-fixing fluxes, and a modification of LQC based on holonomies and gauge-covariant fluxes (referred to as gLQC). Both the models yield singularity resolution via a bounce because of non-perturbative quantum geometric effects resulting in a maximum for energy density. In LQC, the bounce is extremely well captured by a $\rho^2$ term in energy density with a negative sign which emerges as a non-perturbative modification to the classical Friedmann and Raychaudhuri equations. But, details of such modifications in gLQC have remained hidden due to an arduous nature of gauge-covariant flux modifications which do not allow writing above equations in a closed form. To extract these modifications we explore the large volume, weak curvature limit for matter with a fixed equation of state and obtain higher order corrections to the classical theory. We find that in the weak curvature limit of gLQC, in the post-bounce branch, the first order correction beyond classical theory fully recovers the form of modified Friedmann and Raychaudhuri equations of LQC. In contrast, due to an asymmetric bounce in gLQC, the weak curvature limit of the pre-bounce branch exhibits a novel structure with a $\rho^{3/2}$ term as a first order correction beyond classical theory while the $\rho^2$ term appears as a second order correction. Our work shows that gLQC has a far richer structure which includes the form of dynamical equations with non-perturbative modifications in LQC in its weak curvature limit. This indicates that more general loop quantizations of cosmological sectors can reveal LQC at some truncation, and possibly there exist a tower of potentially interesting higher order modifications from quantum geometry which are hidden in the setting of LQC.

There is no new related paper today

  1. [2204.08113] - Rotating regular black holes and rotating stars with a Tolman type potential as a regular interior for the Kerr metric - Angel D. Masa, Vilson T. Zanchin

  2. [2204.08371] - The solution to the problem of time in quantum gravity also solves the time of arrival problem in quantum mechanics - Rodolfo Gambini, Jorge Pullin

  3. [2204.07590] - Deforming Symmetric Product Orbifolds: A tale of moduli and higher spin currents - Luis Apolo, Alexandre Belin, Suzanne Bintanja, Alejandra Castro, Christoph A. Keller

  4. [2204.07694] - Sandwiched Renyi Relative Entropy in AdS/CFT - Reginald J. Caginalp

  5. [2204.08007] - Renormalizable and unitary Lorentz invariant model of quantum gravity - S.A. Larin

Mon - 04/18/22

There is no new related paper today

There is no new related paper today

  1. [2204.07171] - Holography and the KKLT Scenario - Severin Lüst, Cumrun Vafa, Max Wiesner, Kai Xu

  2. [2204.07523] - Non-Invertible Symmetries from Discrete Gauging and Completeness of the Spectrum - Guillermo Arias-Tamargo, Diego Rodriguez-Gomez

New papers last week