Zobrazeno 1 - 10
of 18 922
pro vyhledávání: '"Kitazawa, A"'
Autor:
Kitazawa, Yoshiaki
Density ratio estimation (DRE) is a fundamental machine learning technique for identifying relationships between two probability distributions. $f$-divergence loss functions, derived from variational representations of $f$-divergence, are commonly em
Externí odkaz:
http://arxiv.org/abs/2410.01516
We investigate the volume and lifetime of the high baryon-density matter created in heavy-ion collisions and estimate the optimal collision energy to realize the high baryon-density region over a large spacetime volume. We simulate central collisions
Externí odkaz:
http://arxiv.org/abs/2409.07685
Autor:
Attieh, Nadine, Touroux, Nathan, Bluhm, Marcus, Kitazawa, Masakiyo, Sami, Taklit, Nahrgang, Marlene
In the context of relativistic heavy-ion collisions, we explore the stochastic and dissipative relaxational dynamics of a non-conserved order parameter in a $\lambda\varphi^4$ interaction. The cutoff of the theory is provided by the lattice spacing c
Externí odkaz:
http://arxiv.org/abs/2408.06438
Binder-cumulant analysis of the critical point in the heavy-quark region of QCD is performed by Monte-Carlo simulations with the hopping-parameter expansion at $N_t=6$. We extend our previous analysis at $N_t=4$ to finer lattices and perform high-pre
Externí odkaz:
http://arxiv.org/abs/2407.09156
Autor:
Kitazawa, Yoshihisa
Infra-Red scaling property of inflationary universe is in the same universality class of random walk. The two point correlators of the curvature perturbations are enhanced by the e-folding number N. The distribution function of the curvature perturba
Externí odkaz:
http://arxiv.org/abs/2406.00886
Using SU(3) lattice QCD, we study for the first time the effective potential of the Polyakov loop $\langle P \rangle$ at finite temperature, i.e., the thermodynamic potential, in the field-theoretical way. In the framework of the reweighting method i
Externí odkaz:
http://arxiv.org/abs/2405.17335
We explore how the electric conductivity and associated relaxation time are modified near the QCD critical point and the phase transition to a color superconducting phase using the two-flavor Nambu-Jona-Lasinio model with finite current quark masses.
Externí odkaz:
http://arxiv.org/abs/2405.09240
We investigate the thermodynamics and phase structure of $SU(3)$ Yang-Mills theory on $\mathbb{T}^2\times\mathbb{R}^2$ in Euclidean spacetime in an effective-model approach. The model incorporates two Polyakov loops along two compactified directions
Externí odkaz:
http://arxiv.org/abs/2404.07899
Autor:
Kitazawa, Noriaki
The values of Hubble constant H0 by direct measurements with standard distance ladder are typically larger than those obtained from the observation of cosmic microwave background and the galaxy survey with inverse distance ladder. On the other hand,
Externí odkaz:
http://arxiv.org/abs/2403.03484
Autor:
Kitazawa, Yoshiaki
Density ratio estimation (DRE) is a fundamental machine learning technique for capturing relationships between two probability distributions. State-of-the-art DRE methods estimate the density ratio using neural networks trained with loss functions de
Externí odkaz:
http://arxiv.org/abs/2402.02041