Zobrazeno 1 - 10
of 29
pro vyhledávání: '"Katsumasa Nakayama"'
Autor:
Katsumasa Nakayama, Kei Suzuki
Publikováno v:
Physics Letters B, Vol 843, Iss , Pp 138017- (2023)
The Casimir effect is a quantum phenomenon induced by the zero-point energy of relativistic fields confined in a finite-size system. This effect for photon fields has been studied for a long time, while the realization of counterparts for fermion fie
Externí odkaz:
https://doaj.org/article/bda5805a91014c1b8514a59f3df6ecda
Autor:
Katsumasa Nakayama, Kei Suzuki
Publikováno v:
Physical Review Research, Vol 5, Iss 2, p L022054 (2023)
The Casimir effect is a fundamental quantum phenomenon induced by the zero-point energy for a quantum field. It is well known for relativistic fields with a linear dispersion relation, while its existence or absence for nonrelativistic fields with a
Externí odkaz:
https://doaj.org/article/5f2b70e06daa40968358e1b095d8f141
Publikováno v:
Physics Letters B, Vol 809, Iss , Pp 135713- (2020)
We propose a definition of the Casimir energy for free lattice fermions. From this definition, we study the Casimir effects for the massless or massive naive fermion, Wilson fermion, and (Möbius) domain-wall fermion in 1+1 dimensional spacetime with
Externí odkaz:
https://doaj.org/article/305ab09e9ca741a69ed1be813fb623d6
Autor:
Daisuke Kadoh, Katsumasa Nakayama
Publikováno v:
Nuclear Physics B, Vol 932, Iss , Pp 278-297 (2018)
We study the lattice supersymmetric models numerically using the transfer matrix approach. This method consists only of deterministic processes and has no statistical uncertainties. We improve it by performing a scale transformation of variables such
Externí odkaz:
https://doaj.org/article/4b991d11f629485d93896658af6f359c
Autor:
Daisuke Kadoh, Katsumasa Nakayama
Publikováno v:
Nuclear Physics B, Vol 949, Iss , Pp - (2019)
We study supersymmetry breaking from a lattice model of N=2 supersymmetric quantum mechanics using a direct computational method proposed in arXiv:1803.07960. The vanishing Witten index is realized as a numerical result in high precision. The expecta
Externí odkaz:
https://doaj.org/article/117c5ff82cc34d0d804593f23a7aa5f4
Publikováno v:
Physical Review Research, Vol 3, Iss 2, p 023201 (2021)
The Casimir effect arises from the zero-point energy of particles in momentum space deformed by the existence of two parallel plates. For degrees of freedom on the lattice, its energy-momentum dispersion is determined so as to keep a periodicity with
Externí odkaz:
https://doaj.org/article/58223506371845e0ba6a637bed1e83c3
Autor:
Katsumasa Nakayama, Kei Suzuki
The conventional Casimir effect has been studied in the continuous spacetime, but to elucidate its counterpart in the lattice space is an important subject. Here, we discuss various types of Casimir effects for quantum fields on the lattice. By using
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::264b6221f829487e4cb5930d8410eb92
http://arxiv.org/abs/2301.08002
http://arxiv.org/abs/2301.08002
Publikováno v:
Physical Review D. 105
Publikováno v:
1-27 (2021). doi:10.1103/PhysRevResearch.3.023201
The Casimir effect arises from the zero-point energy of particles in momentum space deformed by the existence of two parallel plates. For degrees of freedom on the lattice, its energy-momentum dispersion is determined so as to keep a periodicity with
Publikováno v:
Physical review / D 104(9), 094515 (2021). doi:10.1103/PhysRevD.104.094515
Physical Review
Physical Review
Physical review / D 104(9), 094515 (2021). doi:10.1103/PhysRevD.104.094515
We investigate the Kondo effect with Wilson fermions. This is based on a mean-field approach for the chiral Gross-Neveu model including four-point interactions between a
We investigate the Kondo effect with Wilson fermions. This is based on a mean-field approach for the chiral Gross-Neveu model including four-point interactions between a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8c65ba532e49336147c747c129743b51