43 citations · 202 across the 21 of their papers we have counts for
21 papers
Functional renormalization group for classical liquids without recourse to hard-core reference systems: A study of three-dimensional Lennard-Jones liquids
Takeru Yokota, Jun Haruyama, Osamu Sugino
In our previous work [Phys. Rev. E 104, 014124 (2021)], we developed a method for analyzing classical liquids using the functional renormalization group (FRG) without relying on a…
Unpolarized prethermal discrete time crystal
Takeru Yokota, Tatsuhiko N. Ikeda
Prethermal discrete time crystals (DTCs) are a novel phase of periodically driven matter that exhibits robust subharmonic oscillations without requiring disorder. However, previous…
Physics-informed Neural Networks for Functional Differential Equations: Cylindrical Approximation and Its Convergence Guarantees
Taiki Miyagawa, Takeru Yokota
We propose the first learning scheme for functional differential equations (FDEs). FDEs play a fundamental role in physics, mathematics, and optimal control. However, the numerical…
Physics-informed neural networks for solving functional renormalization group on a lattice
Takeru Yokota
Addressing high-dimensional partial differential equations to derive effective actions within the functional renormalization group is formidable, especially when considering variou…
Color superconductivity on the lattice -- analytic predictions from QCD in a small box
Takeru Yokota, Yuta Ito, Hideo Matsufuru +4
We investigate color superconductivity on the lattice using the gap equation for the Cooper pair condensate. The weak coupling analysis is justified by choosing the physical size o…
Functional Renormalization Group Approach to Circuit Quantum Electrodynamics
Takeru Yokota, Kanta Masuki, Yuto Ashida
A nonperturbative approach is developed to analyze superconducting circuits coupled to quantized electromagnetic continuum within the framework of the functional renormalization gr…
Flavor number dependence of QCD at finite density by the complex Langevin method
Yusuke Namekawa, Yuhma Asano, Yuta Ito +6
We discuss the flavor number dependence of QCD at low temperature and high density by the complex Langevin method. In our previous work, the complex Langevin method is confirmed to…
Color superconductivity in a small box: a complex Langevin study
Shoichiro Tsutsui, Yuhma Asano, Yuta Ito +5
It is expected that the color superconductivity (CSC) phase appears in QCD at low temperature and high density. On the basis of the lattice perturbation theory, a possible paramete…
Perturbative predictions for color superconductivity on the lattice
Takeru Yokota, Yuhma Asano, Yuta Ito +5
We develop a new method to investigate color superconductivity (CSC) on the lattice based on the Thouless criterion, which amounts to solving the linearized gap equation without im…
Construction of energy density functional for arbitrary spin polarization using functional renormalization group
Takeru Yokota, Tomoya Naito
We show an application of the functional-renormalization-group aided density functional theory to the homogeneous electron gas with arbitrary spin polarization, which gives the ene…
Nonperturbative Waveguide Quantum Electrodynamics
Yuto Ashida, Takeru Yokota, Atac Imamoglu +1
Understanding physical properties of quantum emitters strongly interacting with quantized electromagnetic modes is one of the primary goals in the emergent field of waveguide quant…
Functional-renormalization-group approach to classical liquids with short-range repulsion: a scheme without repulsive reference system
Takeru Yokota, Jun Haruyama, Osamu Sugino
The renormalization-group approaches for classical liquids in previous works require a repulsive reference such as a hard-core one when applied to systems with short-range repulsio…
Ab initio construction of the energy density functional for electron systems with the functional-renormalization-group-aided density functional theory
Takeru Yokota, Tomoya Naito
We show an construction of the energy density functional (EDF) for electron systems using the functional renormalization group. The correlation energies of the…
Microscopic derivation of density functional theory for superfluid systems based on effective action formalism
Takeru Yokota, Haruki Kasuya, Kenichi Yoshida +1
Density-functional theory for superfluid systems is developed in the framework of the functional renormalization group based on the effective action formalism. We introduce the eff…
Functional-renormalization-group aided density-functional analysis for the correlation energy of the two-dimensional homogeneous electron gas
Takeru Yokota, Tomoya Naito
The functional-renormalization-group aided density-functional theory (FRG-DFT) is applied to the two-dimensional homogeneous electron gas (2DHEG). The correlation energy of the 2DH…
Ab-initio description of excited states of a one-dimensional nuclear matter with the Hohenberg-Kohn-theorem-inspired functional-renormalization-group method
Takeru Yokota, Kenichi Yoshida, Teiji Kunihiro
We demonstrate for the first time that a functional-renormalization-group aided density-functional theory (FRG-DFT) describes well the characteristic features of the excited states…
Functional renormalization-group calculation of the equation of state of one-dimensional nuclear matter inspired by the Hohenberg--Kohn theorem
Takeru Yokota, Kenichi Yoshida, Teiji Kunihiro
We present the first successful functional renormalization group(FRG)-aided density-functional (DFT) calculation of the equation of state (EOS) of an infinite nuclear matter (NM) i…
Tachyonic instability of the scalar mode prior to QCD critical point based on Functional renormalization-group method
Takeru Yokota, Teiji Kunihiro, Kenji Morita
We establish and elucidate the physical meaning of the appearance of an acausal mode in the sigma mesonic channel, found in the previous work by the present authors, when the syste…
Spectral functions in functional renormalization group approach -- analysis of the collective soft modes at the QCD critical point --
Takeru Yokota, Teiji Kunihiro, Kenji Morita
We first review the method to calculate the spectral functions in the functional renormalization group (FRG) approach, which has been recently developed. We also provide the numeri…
Novel picture of the soft modes at the QCD critical point based on the FRG method
Takeru Yokota, Teiji Kunihiro, Kenji Morita
We investigate the soft mode at the QCD critical point (CP) on the basis of the functional renormalization group. We calculate the spectral functions in the meson channels in the t…
Functional renormalization group analysis of the soft mode at the QCD critical point
Takeru Yokota, Teiji Kunihiro, Kenji Morita
We make an intensive investigation of the soft mode at the quantum chromodynamics (QCD) critical point on the basis of the functional renormalization group (FRG) method in the loca…