Results 71 to 80 of about 475,708 (204)

Symmetric configurations highlighted by collective quantum coherence

open access: yesEuropean Physical Journal C: Particles and Fields, 2017
Recent developments in quantum gravity have shown the Lorentzian treatment to be a fruitful approach towards the emergence of macroscopic space-times. In this paper, we discuss another related aspect of the Lorentzian treatment: we argue that collective ...
Dennis Obster, Naoki Sasakura
doaj   +1 more source

Endogenous/exogenous stimuli‐responsive smart hydrogels for diabetic wound healing

open access: yesAggregate, Volume 6, Issue 2, February 2025.
This figure illustrates smart hydrogels, persuaded to respond to various stimuli such as temperature, pH, and glucose levels. These smart hydrogels find extensive applications in drug delivery, tissue engineering, and diabetic wound healing due to adapting dynamically to environmental changes.
Saadullah Khattak   +7 more
wiley   +1 more source

Asymptotic Isometry and Two Dimensional Anti-de Sitter Gravity [PDF]

open access: yesarXiv, 1998
We analyze canonical asymptotic isometry of two dimensional AdS dilaton gravity in detail.
arxiv  

Quantum Big-Bounce as a phenomenology of RQM in the Mini-superspace

open access: yesPhysics Letters B
We investigate the emergence of a quantum Big-Bounce in the context of an isotropic Universe, filled by a self-interacting scalar field, which plays the role of a physical clock. The bouncing cosmology is the result of a scattering process, driven by the
Simone Lo Franco, Giovanni Montani
doaj  

Symplectic Structure of Intrinsic Time Gravity

open access: yesUniverse, 2016
The Poisson structure of intrinsic time gravity is analysed. With the starting point comprising a unimodular three-metric with traceless momentum, a trace-induced anomaly results upon quantization.
Eyo Eyo Ita, Amos S. Kubeka
doaj   +1 more source

Relational Lorentzian Asymptotically Safe Quantum Gravity: Showcase Model

open access: yesUniverse
In a recent contribution, we identified possible points of contact between the asymptotically safe and canonical approaches to quantum gravity. The idea is to start from the reduced phase space (often called relational) formulation of canonical quantum ...
Renata Ferrero, Thomas Thiemann
doaj   +1 more source

Micro-canonical and canonical description for generalised entropy

open access: yesPhysics Letters B, 2023
Few parameters dependent generalised entropy includes Tsallis entropy, Rényi entropy, Sharma-Mittal entropy, Barrow entropy, Kaniadakis entropy, etc as particular representatives. Its relation to physical systems is not always clear.
Shin'ichi Nojiri, Sergei D. Odintsov
doaj  

Tunnelling to holographic traversable wormholes

open access: yesSciPost Physics
We study nonperturbative effects of quantum gravity in a system consisting of a coupled pair of holographic CFTs. The AdS$_4$/CFT$_3$ system has three possible ground states: two copies of empty AdS, a pair of extremal AdS black holes, and an eternal AdS
Suzanne Bintanja, Ben Freivogel, Andrew Rolph
doaj   +1 more source

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