Results 61 to 70 of about 174,677 (231)

AdS2 holography and effective QFT

Journal of High Energy Physics, 2023
We discuss AdS2 quantum gravity from an unconventional perspective that emphasizes bulk geometry. In our approach, AdS2 has no boundary, there are no divergences that require renormalization, and the dilaton of JT-gravity can be omitted altogether.
Sangmin Choi, Finn Larsen
doaj   +1 more source

A remark on the BRST symmetry in the Gribov-Zwanziger theory

, 2010
We show that the soft breaking of the BRST symmetry arising in the Gribov-Zwanziger theory can be converted into a linear breaking upon introduction of a set of BRST quartets of auxiliary fields. Due to its compatibility with the Quantum Action Principle,
Capri, M. A. L., Gomez, A. J., Guimaraes, M. S., Lemes, V. E. R., Sorella, S. P., Tedesco, D. G.   +5 more
core   +1 more source

Auto‐Generated Valence States in Electrocatalysts for Boosting Oxygen and Hydrogen Evolution Kinetics in Alkaline Water/Alkaline Seawater/Simulated Seawater/Natural Seawater

Advanced Functional Materials, EarlyView.
This review systematically highlights the latest achievements in mixed‐valence states relevant to hydrogen and oxygen evolution reactions, providing essential insights into future directions and methods for large‐scale practical implementation. This critical review is expected to provide an overview of recent advancements in diverse valence‐state metal
Jitendra N. Tiwari, Gokul Bhaskaran, Krishan Kumar, Yun Suk Huh, Young‐Kyu Han   +4 more
wiley   +1 more source

Percolation induced effects in two-dimensional coined quantum walks: analytic asymptotic solutions

New Journal of Physics, 2014
Quantum walks on graphs can model physical processes and serve as efficient tools in quantum information theory. Once we admit random variations in the connectivity of the underlying graph, we arrive at the problem of percolation, where the long-time ...
B Kollár, J Novotný, T Kiss, I Jex
doaj   +1 more source

Liouvillian spectral collapse in the Scully-Lamb laser model

Physical Review Research, 2021
Phase transitions of thermal systems and the laser threshold were first connected more than forty years ago. Despite the nonequilibrium nature of the laser, the Landau theory of thermal phase transitions, applied directly to the Scully-Lamb laser model ...
Fabrizio Minganti, Ievgen I. Arkhipov, Adam Miranowicz, Franco Nori   +3 more
doaj   +1 more source

Massive higher spins and holography

, 2006
We review recent progress towards the understanding of higher spin gauge symmetry breaking in AdS space from a holographic vantage point. According to the AdS/CFT correspondence, N=4 SYM theory at vanishing coupling constant should be dual to a theory in
Beisert N, Beisert N, Beisert N, Beisert N, Bekaert X, Bianchi M, Bianchi M, Bianchi M, Bianchi M, Bianchi M, Bianchi M, Bianchi M, Bouatta N, de Medeiros P, Fabio Riccioni, Ferrara S, Ferrara S, Ferrara S, Henn J, Heslop P J, Leigh R G, Leigh R G, Maldacena J M, Massimo Bianchi, Metsaev R R, Riccioni F, Sezgin E, Sezgin E, Sezgin E, Sorokin D, Vasiliev M A, Vasiliev M A, Witten E, Witten E, Zinoviev Y M   +34 more
core   +1 more source

Atomic‐Scale Light Coupling Control in Ultrathin Photonic Membranes

Advanced Functional Materials, EarlyView.
Ultrathin photonic nanomembranes provide atomic‐scale control over the coupling between incident light and high‐Q photonic modes, enabling angstrom‐level resonance tuning and strong field confinement. When integrated with TMD monolayers, they further yield enhanced light–matter interactions, offering a versatile platform for advancing quantum photonics,
Chih‐Zong Deng, Chun‐Hao Chiang, Sunhao Shi, Jui‐Han Fu, Yen‐Ju Wu, Kuniaki Konishi, Vincent Tung, Chun‐Wei Chen, Ya‐Lun Ho   +8 more
wiley   +1 more source

Can photon be considered as its trajectory self-detector (self-collapse as spontaneous superposition breaking)

, 2022
In this work we theoretically considered variations of remarkable experiments of single photon interference ( at beam splitter, at diaphragm with two slits, etc., especially recent experiment of such kind realized by V. Jacques, E.
Pankovic, Vladan
core  

Ferroelectricity in Antiferromagnetic Wurtzite Nitrides

Advanced Functional Materials, EarlyView.
We establish MnSiN2${\rm MnSiN}_2$ and MnGeN2${\rm MnGeN}_2$ as aristotypes of a new multiferroic wurtzite family that simultaneously exhibits ferroelectricity and antiferromagnetism with altermagnetic spin splitting. By strategically substituting alkaline‐earth metals, we predict new materials with coexisting switchable polarization, spin texture, and
Steven M. Baksa, Lin‐Ding Yuan, Stephen D. Wilson, James M. Rondinelli   +3 more
wiley   +1 more source

Symmetry restoration and uniformly accelerated observers in Minkowski spacetime

Journal of High Energy Physics
We reassess the problem of symmetry restoration induced by observers’ acceleration within the context of interacting quantum field theories in Minkowski spacetime.
Domenico Giuseppe Salluce, Marco Pasini, Antonino Flachi, Antonio Pittelli, Stefano Ansoldi   +4 more
doaj   +1 more source