Zobrazeno 1 - 10
of 310
pro vyhledávání: '"Higuchi, Atsushi"'
Publikováno v:
Phys. Rev. D 109, 084041, 2024
A semiclassical investigation of the electromagnetic radiation emitted by a charged particle in a radially freely falling motion in Schwarzschild spacetime is carried out. We use quantum field theory at tree level to obtain the one-particle-emission
Externí odkaz:
http://arxiv.org/abs/2404.11801
Publikováno v:
Phys. Rev. D 109, 064080, 2024
The electromagnetic radiation emitted by an accelerated charged particle can be described theoretically as the interaction of the charge with the so-called Fulling-Davies-Unruh thermal bath in the coordinate frame co-accelerated with the charge. We p
Externí odkaz:
http://arxiv.org/abs/2311.09025
Publikováno v:
Physical Review D 109, 024044 (2024)
We investigate the connection between the classical Larmor formula and the quantum Unruh effect by computing the emitted power by a uniformly accelerated charged particle and its angular distribution in the coaccelerated frame. We consider a classica
Externí odkaz:
http://arxiv.org/abs/2310.06127
Publikováno v:
Class.Quant.Grav. 40 (2023) 1, 015009
We study non-interacting automorphic quantum scalar fields with positive mass in two-dimensional de Sitter space. We find that there are no Hadamard states which are de Sitter invariant except in the periodic case, extending the result of Epstein and
Externí odkaz:
http://arxiv.org/abs/2207.13202
Autor:
Ihsan, Kalingga Titon Nur, Takenaka, Hideaki, Higuchi, Atsushi, Sakti, Anjar Dimara, Wikantika, Ketut
Publikováno v:
In Solar Energy 1 July 2024 276
Autor:
Ihsan, Kalingga Titon Nur, Sakti, Anjar Dimara, Higuchi, Atsushi, Takenaka, Hideaki, Wikantika, Ketut
Publikováno v:
In Energy & Buildings 15 September 2024 319
Autor:
Higuchi, Atsushi, Lima, William C. C.
Publikováno v:
Phys. Rev. D 105, 045002 (2022)
We study self-interacting massive scalar field theory in static spacetimes with a bifurcate Killing horizon and a wedge reflection. In this theory the Hartle-Hawking state is defined to have the $N$-point correlation functions obtained by analyticall
Externí odkaz:
http://arxiv.org/abs/2107.10271
Publikováno v:
J. Math. Phys. 63, 122301 (2022)
We study the solutions to the Klein-Gordon equation for the massive scalar field in the universal covering space of two-dimensional anti-de Sitter space. For certain values of the mass parameter, we impose a suitable set of boundary conditions which
Externí odkaz:
http://arxiv.org/abs/2107.08754
Publikováno v:
Phys. Rev. D 103, 125005 (2021)
We study the relations of the positive frequency mode functions of Dirac field in 4-dimensional Minkowski spacetime covered with Rindler and Kasner coordinates, and describe the explicit form of the Minkowski vacuum state with the quantum states in K
Externí odkaz:
http://arxiv.org/abs/2104.06625
Publikováno v:
Phys. Rev. D 103, 065016 (2021)
The propagators for the Faddeev-Popov (FP) ghosts in Yang-Mills theory and perturbative gravity in the covariant gauge are infrared (IR) divergent in de Sitter spacetime. An IR cutoff in the momentum space to regularize these divergences breaks the d
Externí odkaz:
http://arxiv.org/abs/2101.07268