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A Cosmological Mechanism for Stabilizing Moduli

In this paper, we show how the generic coupling of moduli to the kinetic energy of ordinary matter fields results in a cosmological mechanism that influences the evolution and stability of moduli. As an example, we reconsider the problem of stabilizing the dilaton in a non-perturbative potential ind...

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Detalles Bibliográficos
Autores principales: Huey, Greg, Steinhardt, Paul J., Ovrut, Burt A., Waldram, Daniel
Lenguaje:eng
Publicado: 2000
Materias:
Acceso en línea:https://dx.doi.org/10.1016/S0370-2693(00)00152-0
http://cds.cern.ch/record/422334
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author Huey, Greg
Steinhardt, Paul J.
Ovrut, Burt A.
Waldram, Daniel
author_facet Huey, Greg
Steinhardt, Paul J.
Ovrut, Burt A.
Waldram, Daniel
author_sort Huey, Greg
collection CERN
description In this paper, we show how the generic coupling of moduli to the kinetic energy of ordinary matter fields results in a cosmological mechanism that influences the evolution and stability of moduli. As an example, we reconsider the problem of stabilizing the dilaton in a non-perturbative potential induced by gaugino condensates. A well-known difficulty is that the potential is so steep that the dilaton field tends to overrun the correct minimum and to evolve to an observationally unacceptable vacuum. We show that the dilaton coupling to the thermal energy of matter fields produces a natural mechanism for gently relaxing the dilaton field into the correct minimum of the potential without fine-tuning of initial conditions. The same mechanism is potentially relevant for stabilizing other moduli fields.
id cern-422334
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2000
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spelling cern-4223342023-03-21T05:31:55Zdoi:10.1016/S0370-2693(00)00152-0http://cds.cern.ch/record/422334engHuey, GregSteinhardt, Paul J.Ovrut, Burt A.Waldram, DanielA Cosmological Mechanism for Stabilizing ModuliParticle Physics - TheoryIn this paper, we show how the generic coupling of moduli to the kinetic energy of ordinary matter fields results in a cosmological mechanism that influences the evolution and stability of moduli. As an example, we reconsider the problem of stabilizing the dilaton in a non-perturbative potential induced by gaugino condensates. A well-known difficulty is that the potential is so steep that the dilaton field tends to overrun the correct minimum and to evolve to an observationally unacceptable vacuum. We show that the dilaton coupling to the thermal energy of matter fields produces a natural mechanism for gently relaxing the dilaton field into the correct minimum of the potential without fine-tuning of initial conditions. The same mechanism is potentially relevant for stabilizing other moduli fields.In this paper, we show how the generic coupling of moduli to the kinetic energy of ordinary matter fields results in a cosmological mechanism that influences the evolution and stability of moduli. As an example, we reconsider the problem of stabilizing the dilaton in a non-perturbative potential induced by gaugino condensates. A well-known difficulty is that the potential is so steep that the dilaton field tends to overrun the correct minimum and to evolve to an observationally unacceptable vacuum. We show that the dilaton coupling to the thermal energy of matter fields produces a natural mechanism for gently relaxing the dilaton field into the correct minimum of the potential without fine-tuning of initial conditions. The same mechanism is potentially relevant for stabilizing other moduli fields.In this paper, we show how the generic coupling of moduli to the kinetic energy of ordinary matter fields results in a cosmological mechanism that influences the evolution and stability of moduli. As an example, we reconsider the problem of stabilizing the dilaton in a non-perturbative potential induced by gaugino condensates. A well-known difficulty is that the potential is so steep that the dilaton field tends to overrun the correct minimum and to evolve to an observationally unacceptable vacuum. We show that the dilaton coupling to the thermal energy of matter fields produces a natural mechanism for gently relaxing the dilaton field into the correct minimum of the potential without fine-tuning of initial conditions. The same mechanism is potentially relevant for stabilizing other moduli fields.In this Letter, we show how the generic coupling of moduli to the kinetic energy of ordinary matter fields results in a cosmological mechanism that influences the evolution and stability of moduli. As an example, we reconsider the problem of stabilizing the dilaton in a non-perturbative potential induced by gaugino condensates. A well-known difficulty is that the potential is so steep that the dilaton field tends to overrun the correct minimum and to evolve to an observationally unacceptable vacuum. We show that the dilaton coupling to the kinetic or thermal energy of matter fields produces a natural mechanism for gently relaxing the dilaton field into the correct minimum of the potential without fine-tuning of initial conditions. The same mechanism is potentially relevant for stabilizing other moduli fields.hep-th/0001112UPR-873-TCERN-TH-2000-018CERN-TH-2000-018UPR-873-Toai:cds.cern.ch:4223342000-01-20
spellingShingle Particle Physics - Theory
Huey, Greg
Steinhardt, Paul J.
Ovrut, Burt A.
Waldram, Daniel
A Cosmological Mechanism for Stabilizing Moduli
title A Cosmological Mechanism for Stabilizing Moduli
title_full A Cosmological Mechanism for Stabilizing Moduli
title_fullStr A Cosmological Mechanism for Stabilizing Moduli
title_full_unstemmed A Cosmological Mechanism for Stabilizing Moduli
title_short A Cosmological Mechanism for Stabilizing Moduli
title_sort cosmological mechanism for stabilizing moduli
topic Particle Physics - Theory
url https://dx.doi.org/10.1016/S0370-2693(00)00152-0
http://cds.cern.ch/record/422334
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