269 citations · 1.6k across the 55 of their papers we have counts for
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Dyonic Catalysis in the KPV Vacuum Decay
Yuichiro Nakai, Yutaka Ookouchi, Norihiro Tanahashi
We investigate catalysis induced by a dyonic impurity in the metastable vacuum studied by Kachru, Pearson and Verlinde, which can be relevant to vacuum decay in the KKLT scenario.…
Entanglement Entropy and Decoupling in the Universe
Yuichiro Nakai, Noburo Shiba, Masaki Yamada
In the expanding universe, two interacting fields are no longer in thermal contact when the interaction rate becomes smaller than the Hubble expansion rate. After decoupling, two s…
Thermal Effects on Decays of a Metastable Brane Configuration
Yuichiro Nakai, Yutaka Ookouchi
We study thermal effects on a decay process of a false vacuum in type IIA string theory. At finite temperature, the potential of the theory is corrected and also thermally excited…
Conductivity bounds in probe brane models
Tatsuhiko N. Ikeda, Andrew Lucas, Yuichiro Nakai
We discuss upper and lower bounds on the electrical conductivity of finite temperature strongly coupled quantum field theories, holographically dual to probe brane models, within l…
Baryon as Impurity for Phase Transition in String Landscape
Aya Kasai, Yuichiro Nakai, Yutaka Ookouchi
We consider a decay of a false vacuum in flux compactifications of type IIB string theory and study a catalytic effect for a phase transition induced by a new type of impurities. W…
Supersymmetry-Breaking Nonlinear Sigma Models
Takumi Imai, K. -I. Izawa, Yuichiro Nakai
We consider a novel class of constraints on chiral superfields to obtain supersymmetric nonlinear sigma models in four spacetime dimensions, which strictly combine the internal sym…