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pro vyhledávání: '"Discrete Spacetime"'
Autor:
Gupta, Chaitanya, Short, Anthony J.
We consider introducing the Dirac sea in a discrete spacetime model of fermions which approximates the Dirac equation in the continuum limit. However, if we attempt to fill up the `negative' energy states, we run into a problem. A new boundary is cre
Externí odkaz:
http://arxiv.org/abs/2412.03466
Autor:
Luo, Xingdong
Non-equilibrium driving systems provide fertile ground for exploring intriguing spontaneous symmetry breaking phenomena. In this study, we report on the intertwined discrete spacetime translational symmetry breaking in a driven-dissipative spin syste
Externí odkaz:
http://arxiv.org/abs/2406.16090
Autor:
Gorard, Jonathan
We study the problem of a spherically-symmetric distribution of a perfect relativistic fluid accreting onto a (potentially spinning) black hole within a fully discrete spacetime setting. This problem has previously been studied extensively in the con
Externí odkaz:
http://arxiv.org/abs/2402.02331
Akademický článek
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Autor:
Shah, Naveed Ahmad, Shaikh, Aasiya, Yamin, Yas, Sahoo, P. K., Bhat, Aaqid, Lone, Suhail Ahmad, Faizal, Mir, Ahsan, M. A. H.
Even though the deformation of Heisenberg algebra by a minimal length has become a main tool in quantum gravity phenomenology, it has never been rigorously obtained and is derived using heuristic reasoning. Thus, for the first time, we go beyond the
Externí odkaz:
http://arxiv.org/abs/2302.12572
The causal set and Wolfram model approaches to discrete quantum gravity both permit the formulation of a manifestly covariant notion of entanglement entropy for quantum fields. In the causal set case, this is given by a construction (due to Sorkin an
Externí odkaz:
http://arxiv.org/abs/2301.12455
Publikováno v:
Quantum 7, 1179 (2023)
This work provides a relativistic, digital quantum simulation scheme for both $2+1$ and $3+1$ dimensional quantum electrodynamics (QED), based on a discrete spacetime formulation of theory. It takes the form of a quantum circuit, infinitely repeating
Externí odkaz:
http://arxiv.org/abs/2205.03148
Publikováno v:
Phys.Rev.D 106 (2022) 6, 065003
We extend to a non-Hermitian fermionic quantum field theory with PT symmetry our previous discussion of second quantization, discrete symmetry transformations, and inner products in a scalar field theory [arXiv:2006.06656]. For illustration, we consi
Externí odkaz:
http://arxiv.org/abs/2201.11061
Autor:
Çevik, Ahmet, Seskir, Zeki
We give an analysis over a variation of causal sets where the light cone of an event is represented by finitely branching trees with respect to any given arbitrary dynamics. We argue through basic topological properties of Cantor space that under cer
Externí odkaz:
http://arxiv.org/abs/2109.14042
Akademický článek
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