Zobrazeno 1 - 10
of 952
pro vyhledávání: '"Suzuki, Kei"'
The Casimir effect is known to be induced from photon fields confined by a small volume, and also its fermionic counterpart has been predicted in a wide range of quantum systems. Here, we investigate what types of Casimir effects can occur from quark
Externí odkaz:
http://arxiv.org/abs/2402.17638
Publikováno v:
Phys. Rev. D 109, 094031 (2024)
We consider the quantum chromodynamics (QCD) Kondo effect for a single heavy quark in quark matter composed of light quarks with chiral symmetry breaking. Introducing several spinor structures in QCD Kondo condensates, i.e., particle-projected conden
Externí odkaz:
http://arxiv.org/abs/2402.11578
Autor:
Aoki, Sinya, Aoki, Yasumichi, Fukaya, Hidenori, Hashimoto, Shoji, Kanamori, Issaku, Kaneko, Takashi, Nakamura, Yoshifumi, Rohrhofer, Christian, Suzuki, Kei, Ward, David
We study the $U(1)_A$ anomaly at high temperatures of $N_f=2+1$ lattice QCD with chiral fermions. Gauge ensembles are generated with M\"obius domain-wall (MDW) fermions, and the measurements are reweighted to those with overlap fermions. We report on
Externí odkaz:
http://arxiv.org/abs/2401.14022
Autor:
Nakayama, Katsumasa, Suzuki, Kei
Publikováno v:
Phys. Rev. D 109, 065002 (2024)
The Casimir effect is induced by the interplay between photon fields and boundary conditions, and in particular, photon fields modified in axion electrodynamics may lead to the sign-flipping of the Casimir energy. We propose a theoretical approach to
Externí odkaz:
http://arxiv.org/abs/2310.18092
Autor:
Nakata, Kouki, Suzuki, Kei
Publikováno v:
npj Spintronics 2, 11 (2024)
There has been a growing interest in non-Hermitian quantum mechanics. The key concepts of quantum mechanics are quantum fluctuations. Quantum fluctuations of quantum fields confined in a finite-size system induce the zero-point energy shift. This qua
Externí odkaz:
http://arxiv.org/abs/2305.09231
Autor:
Nakayama, Katsumasa, Suzuki, Kei
Publikováno v:
PoS (LATTICE2022) 379 (2023)
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:
http://arxiv.org/abs/2301.08002
A chiral effective theory of scalar and vector diquarks is formulated, which is based on $SU(3)_R\times SU(3)_L$ chiral symmetry and includes interactions between scalar and vector diquarks with one or two mesons. We find that the diquark interaction
Externí odkaz:
http://arxiv.org/abs/2212.08338
We develop a mean-field theory of a novel Kondo effect emerging in systems without a Fermi surface, which instead emerges under strong magnetic fields. We determine the magnitude of the Kondo condensate which is a particle pairing composed of conduct
Externí odkaz:
http://arxiv.org/abs/2211.16150
Publikováno v:
ITE Transactions on Media Technology and Applications 12 (2024) 110-122
Compressing the sign information of discrete cosine transform (DCT) coefficients is an intractable problem in image coding schemes due to the equiprobable characteristics of the signs. To overcome this difficulty, we propose an efficient compression
Externí odkaz:
http://arxiv.org/abs/2209.10712
Autor:
Nakayama, Katsumasa, Suzuki, Kei
Publikováno v:
Phys. Lett. B 843, 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:
http://arxiv.org/abs/2207.14078