Holographic superfluid flows with a localized repulsive potential

Akihiro Ishibashi, Kengo Maeda, Takashi Okamura

Research output: Contribution to journalArticle

Abstract

We investigate a holographic model of superfluid flows with an external repulsive potential. When the strength of the potential is sufficiently weak, we analytically construct two steady superfluid flow solutions. As the strength of the potential is increased, the two solutions merge into a single critical solution at a critical strength, and then disappear above the critical value, as predicted by a saddle-node bifurcation theory. We also analyze the spectral function of fluctuations around the solutions under a certain decoupling approximation.

Original languageEnglish
Article number046007
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume94
Issue number4
DOIs
Publication statusPublished - 2016 Aug 24

Fingerprint

superfluidity
saddles
decoupling
approximation

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Holographic superfluid flows with a localized repulsive potential. / Ishibashi, Akihiro; Maeda, Kengo; Okamura, Takashi.

In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 94, No. 4, 046007, 24.08.2016.

Research output: Contribution to journalArticle

@article{01e6764d1fcf4d59b24ee605efb7aebc,
title = "Holographic superfluid flows with a localized repulsive potential",
abstract = "We investigate a holographic model of superfluid flows with an external repulsive potential. When the strength of the potential is sufficiently weak, we analytically construct two steady superfluid flow solutions. As the strength of the potential is increased, the two solutions merge into a single critical solution at a critical strength, and then disappear above the critical value, as predicted by a saddle-node bifurcation theory. We also analyze the spectral function of fluctuations around the solutions under a certain decoupling approximation.",
author = "Akihiro Ishibashi and Kengo Maeda and Takashi Okamura",
year = "2016",
month = "8",
day = "24",
doi = "10.1103/PhysRevD.94.046007",
language = "English",
volume = "94",
journal = "Physical review D: Particles and fields",
issn = "1550-7998",
publisher = "American Institute of Physics Publising LLC",
number = "4",

}

TY - JOUR

T1 - Holographic superfluid flows with a localized repulsive potential

AU - Ishibashi, Akihiro

AU - Maeda, Kengo

AU - Okamura, Takashi

PY - 2016/8/24

Y1 - 2016/8/24

N2 - We investigate a holographic model of superfluid flows with an external repulsive potential. When the strength of the potential is sufficiently weak, we analytically construct two steady superfluid flow solutions. As the strength of the potential is increased, the two solutions merge into a single critical solution at a critical strength, and then disappear above the critical value, as predicted by a saddle-node bifurcation theory. We also analyze the spectral function of fluctuations around the solutions under a certain decoupling approximation.

AB - We investigate a holographic model of superfluid flows with an external repulsive potential. When the strength of the potential is sufficiently weak, we analytically construct two steady superfluid flow solutions. As the strength of the potential is increased, the two solutions merge into a single critical solution at a critical strength, and then disappear above the critical value, as predicted by a saddle-node bifurcation theory. We also analyze the spectral function of fluctuations around the solutions under a certain decoupling approximation.

UR - http://www.scopus.com/inward/record.url?scp=84984917677&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84984917677&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.94.046007

DO - 10.1103/PhysRevD.94.046007

M3 - Article

VL - 94

JO - Physical review D: Particles and fields

JF - Physical review D: Particles and fields

SN - 1550-7998

IS - 4

M1 - 046007

ER -