Zobrazeno 1 - 10
of 511
pro vyhledávání: '"DOI, Takahiro"'
Autor:
Aoyama, Tatsumi, Doi, Takahiro M., Doi, Takumi, Itou, Etsuko, Lyu, Yan, Murakami, Kotaro, Sugiura, Takuya
Publikováno v:
Phys. Rev. D 110, 094502 (2024)
We report scale setting and hadronic properties for our new lattice QCD gauge configuration set (HAL-conf-2023). We employ $(2+1)$-flavor nonperturbatively improved Wilson fermions with stout smearing and the Iwasaki gauge action on a $96^4$ lattice,
Externí odkaz:
http://arxiv.org/abs/2406.16665
Publikováno v:
Symmetry 15, 333 (2023)
We discuss the hadron--quark crossover accompanied by the formation of Cooper triples (three-body counterpart of Cooper pairs) by analogy with the Bose--Einstein condensate to Bardeen--Cooper--Schrieffer crossover in two-component fermionic systems.
Externí odkaz:
http://arxiv.org/abs/2211.14194
The nuclear forces are determined by combining the HAL QCD method and a new type of source smearing technique. The new smearing is a projection to a space spanned by the lowest-lying eigenvectors of the free Laplacian operator on a lattice, which ena
Externí odkaz:
http://arxiv.org/abs/2202.12532
Publikováno v:
Phys. Rev. A 104, 053328 (2021)
We theoretically investigate ground-state properties of a three-component Fermi gas with pairwise contact interactions between different components near a triatomic resonance where bound trimers are about to appear. Using variational equations for in
Externí odkaz:
http://arxiv.org/abs/2107.13232
Publikováno v:
Phys. Rev. A 104, 023319 (2021)
We elucidate universal many-body properties of a one-dimensional, two-component ultracold Fermi gas near the $p$-wave Feshbach resonance. The low-energy scattering in this system can be characterized by two parameters, that is, $p$-wave scattering le
Externí odkaz:
http://arxiv.org/abs/2106.12909
Publikováno v:
Phys. Rev. Research 3, 033180 (2021)
We investigate a polaronic excitation in a one-dimensional spin-1/2 Fermi gas with contact attractive interactions, using the complex Langevin method, which is a promising approach to evade a possible sign problem in quantum Monte Carlo simulations.
Externí odkaz:
http://arxiv.org/abs/2105.11072
Publikováno v:
Phys. Rev. Research 4, L012021 (2022)
We investigate many-body properties of equally populated three-component fermions with attractive three-body contact interaction in one dimension. A diagrammatic approach suggests the possible occurrence of Cooper triples at low temperature, which ar
Externí odkaz:
http://arxiv.org/abs/2012.03627
Publikováno v:
Phys. Rev. Research 2, 033441 (2020)
Pseudogap is a ubiquitous phenomenon in strongly correlated systems such as high-$T_{\rm c}$ superconductors, ultracold atoms and nuclear physics. While pairing fluctuations inducing the pseudogap are known to be enhanced in low-dimensional systems,
Externí odkaz:
http://arxiv.org/abs/2005.12124
Autor:
Tsutsui, Shoichiro, Doi, Takahiro M.
Publikováno v:
Ann. Phys. 409, 167924 (2019)
We discuss fundamental properties of the fastest apparent convergence (FAC) condition which is used as a variational criterion in optimized perturbation theory (OPT). We examine an integral representation of the FAC condition and a distribution of th
Externí odkaz:
http://arxiv.org/abs/1901.04353