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Holography of a composite inflaton

Holography of a composite inflaton
Holography of a composite inflaton
We study the time evolution of a brane construction that is holographically dual to a strongly coupled gauge theory that dynamically breaks a global symmetry through the generation of an effective composite Higgs vev. The D3/D7 system with a background magnetic field or non-trivial gauge coupling (dilaton) profile displays the symmetry breaking. We study motion of the D7 brane in the background of the D3 branes. For small field inflation in the field theory the effective Higgs vev rolls from zero to the true vacuum value. We study what phenomenological dilaton profile generates the slow rolling needed, hence learning how the strongly coupled gauge theory’s coupling must run. We note that evolution of our configuration in the holographic direction, representing the phyiscs of the strong interactions, can provide additional slowing of the roll time. Inflation seems to be favoured if the coupling changes by only a small amount or very gently. We speculate on how such a scenario could be realized away from N=4 gauge theory, for example, in a walking gauge theory.
gauge-gravity correspondence, AdS-CFT correspondence
Evans, Nick
33dfbb52-64dd-4c1f-9cd1-074faf2be4b3
French, James
1586c08e-3384-47c5-8118-fc08f54ea50e
Kim, Keun-Young
45194302-dffc-4cf6-85f2-55bec8f574fb
Evans, Nick
33dfbb52-64dd-4c1f-9cd1-074faf2be4b3
French, James
1586c08e-3384-47c5-8118-fc08f54ea50e
Kim, Keun-Young
45194302-dffc-4cf6-85f2-55bec8f574fb

Evans, Nick, French, James and Kim, Keun-Young (2010) Holography of a composite inflaton. The Journal of High Energy Physics, 2010 (11). (doi:10.1007/JHEP11(2010)145).

Record type: Article

Abstract

We study the time evolution of a brane construction that is holographically dual to a strongly coupled gauge theory that dynamically breaks a global symmetry through the generation of an effective composite Higgs vev. The D3/D7 system with a background magnetic field or non-trivial gauge coupling (dilaton) profile displays the symmetry breaking. We study motion of the D7 brane in the background of the D3 branes. For small field inflation in the field theory the effective Higgs vev rolls from zero to the true vacuum value. We study what phenomenological dilaton profile generates the slow rolling needed, hence learning how the strongly coupled gauge theory’s coupling must run. We note that evolution of our configuration in the holographic direction, representing the phyiscs of the strong interactions, can provide additional slowing of the roll time. Inflation seems to be favoured if the coupling changes by only a small amount or very gently. We speculate on how such a scenario could be realized away from N=4 gauge theory, for example, in a walking gauge theory.

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More information

Published date: 29 November 2010
Keywords: gauge-gravity correspondence, AdS-CFT correspondence
Organisations: Physics & Astronomy

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Local EPrints ID: 337321
URI: https://eprints.soton.ac.uk/id/eprint/337321
PURE UUID: 0a51ce26-bbd2-47fe-a46d-1f1aee97412a

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Date deposited: 24 Apr 2012 10:39
Last modified: 16 Jul 2019 22:07

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Contributors

Author: Nick Evans
Author: James French
Author: Keun-Young Kim

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