14 citations · 44 across the 14 of their papers we have counts for
14 papers
The mini-Page Curve in Cosmology
Ricardo Espíndola, Shoichiro Miyashita
The black hole information paradox has motivated extensive study of how and when information escapes from evaporating black holes. Here we address the analogous question for cosmol…
Holograms and Standard Models
Shoichiro Miyashita, Yasuhiro Sekino, Leonard Susskind
Despite riddles, mysteries, and enigmas the theory of elementary particles has not changed for 50 years. We argue that the current paradigm -- Wilsonian quantum field theory -- is…
Flow-geometry microstates
Ricardo Espíndola, Shoichiro Miyashita
We construct geometric microstates for a class of two-dimensional flow geometriesspacetimes that interpolate from an asymptotic AdS boundary to a dS static patch in the…
Many phases in a hairy box in three dimensions
Shoichiro Miyashita
In this paper, I investigate gravitational thermodynamics of the Einstein-Maxwell-scalar system in three dimensions without a cosmological constant. In the previous work by Krishna…
DSSYK at Infinite Temperature: The Flat-Space Limit and the 't Hooft Model
Shoichiro Miyashita, Yasuhiro Sekino, Leonard Susskind
In the limit of infinite radius de Sitter space becomes locally flat and the static patch tends to Rindler space. A holographic description of the static patch must result in a hol…
Thermodynamics of the 3-dimensional Einstein-Maxwell system
Shoichiro Miyashita
Recently, I studied the thermodynamical properties of the Einstein-Maxwell system with a box boundary in 4-dimensions [1](JHEP 04 (2024) 083). In this paper, I investigate those in…
Thermodynamics of the Einstein-Maxwell system
Shoichiro Miyashita
At first glance, thermodynamic properties of gravity with asymptotically AdS conditions and those with box boundary conditions, where the spatial section of the boundary is a spher…
Rotating particles in AdS: Holography at weak gauge coupling and without conformal symmetry
Tomotaka Kitamura, Shoichiro Miyashita, Yasuhiro Sekino
We consider gauge/gravity correspondence between maximally supersymmetric Yang-Mills theory in () dimensions and superstring theory on the near-horizon limit of the D-brane…
Gravitational and Gravitoscalar Thermodynamics
Shoichiro Miyashita
Gravitational thermodynamics and gravitoscalar thermodynamics with boundary geometry are investigated through the partition function, assuming that all Eucl…
Role of Mann Counterterm in Gravitational Energy
Shoichiro Miyashita
In 1999, R. B. Mann proposed a counterterm that is some sort of generalization of the well-known Holographic counterterm and that can eliminate the divergence of the gravitational…
Energy spectrum of a quantum spacetime with boundary
Shoichiro Miyashita
In this paper, I revisit the microcanonical partition function, or density of states (DOS), of general relativity. By using the minisuperspace path integral approximation, I direct…
Stable Singularity-free Cosmological Solutions in non-projectable Horava-Lifshitz Gravity
Mitsuhiro Fukushima, Yosuke Misonoh, Shoichiro Miyashita +1
We find stable singularity-free cosmological solutions in non-flat Friedmann-Lemaître-Robertson-Walker (FLRW) spacetime in the context of Hořava-Lifshitz (HL) theory. Although we e…
Stability of Singularity-free Cosmological Solutions in Hořava-Lifshitz Gravity
Yosuke Misonoh, Mitsuhiro Fukushima, Shoichiro Miyashita
We study stability of singularity-free cosmological solutions with positive cosmological constant based on projectable Hořava-Lifshitz (HL) theory. In HL theory, the isotropic and…
AdS Monopole Black Hole and Phase Transition
Shoichiro Miyashita, Kei-ichi Maeda
We study the Einstein-SO(3)Yang-Mills-Higgs system with a negative cosmological constant, and find the monopole black hole solutions as well as the trivial Reissner-Nordström black…