Supercritical string cosmology drains the swampland

Ellis, John; Mavromatos, Nick E.; Nanopoulos, D. V.

doi:10.1103/PhysRevD.102.046015

Title: Supercritical string cosmology drains the swampland

Abstract

The first and second swampland conjectures (FSC & SSC) are substantially modified in noncritical string cosmology, in which cosmic time is identified with the timelike Liouville mode of the supercritical string. In this scenario the Friedmann equation receives additional contributions due to the noncriticality of the string. These are potentially important when one seeks to apply the Bousso bound for the entropy of states that may become light as the dilaton takes on trans-Planckian values, as in a de Sitter phase, and restore consistency with the FSC and in at least some cases also the SSC. The weak gravity conjecture (WGC) for scalar potentials is saturated in the supercritical string scenarios discussed in this work, but only if one uses the dilaton as appears in the string effective action, with a kinetic term that is not canonically normalized. In the case of a noncritical Starobinsky potential, the WGC is satisfied by both the canonically normalized dilaton and the dilaton used in the string effective action.

Authors:

;

Publication Date:: Wed Aug 26 00:00:00 EDT 2020

Research Org.:: Texas A & M Univ., College Station, TX (United States)

Sponsoring Org.:: USDOE Office of Science (SC); Science and Technology Facilities Council (STFC); Estonian Research Council; Alexander S. Onassis Public Benefit Foundation

OSTI Identifier:: 1651172

Alternate Identifier(s):: OSTI ID: 1802176

Grant/Contract Number:: FG02-13ER42020; SC0010813; ST/P000258/1

Resource Type:: Published Article

Journal Name:: Physical Review. D.

Additional Journal Information:: Journal Name: Physical Review. D. Journal Volume: 102 Journal Issue: 4; Journal ID: ISSN 2470-0010

Publisher:: American Physical Society

Country of Publication:: United States

Language:: English

Subject:: 79 ASTRONOMY AND ASTROPHYSICS; Astronomy & Astrophysics; Physics

Citation Formats


                    Ellis, John, Mavromatos, Nick E., and Nanopoulos, D. V. Supercritical string cosmology drains the swampland.  United States: N. p., 2020. 
Web.  doi:10.1103/PhysRevD.102.046015.

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                    Ellis, John, Mavromatos, Nick E., & Nanopoulos, D. V. Supercritical string cosmology drains the swampland.  United States.  https://doi.org/10.1103/PhysRevD.102.046015

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                    Ellis, John, Mavromatos, Nick E., and Nanopoulos, D. V. Wed .  
"Supercritical string cosmology drains the swampland".  United States.  https://doi.org/10.1103/PhysRevD.102.046015.

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@article{osti_1651172,

  title        = {Supercritical string cosmology drains the swampland},

  author       = {Ellis, John and Mavromatos, Nick E. and Nanopoulos, D. V.},

  abstractNote = {The first and second swampland conjectures (FSC & SSC) are substantially modified in noncritical string cosmology, in which cosmic time is identified with the timelike Liouville mode of the supercritical string. In this scenario the Friedmann equation receives additional contributions due to the noncriticality of the string. These are potentially important when one seeks to apply the Bousso bound for the entropy of states that may become light as the dilaton takes on trans-Planckian values, as in a de Sitter phase, and restore consistency with the FSC and in at least some cases also the SSC. The weak gravity conjecture (WGC) for scalar potentials is saturated in the supercritical string scenarios discussed in this work, but only if one uses the dilaton as appears in the string effective action, with a kinetic term that is not canonically normalized. In the case of a noncritical Starobinsky potential, the WGC is satisfied by both the canonically normalized dilaton and the dilaton used in the string effective action.},

  doi          = {10.1103/PhysRevD.102.046015},

  journal      = {Physical Review. D.},

  number       = 4,

  volume       = 102,

  place        = {United States},

  year         = {Wed Aug 26 00:00:00 EDT 2020},

  month        = {Wed Aug 26 00:00:00 EDT 2020}

}

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Title: Supercritical string cosmology drains the swampland

Abstract

Citation Formats

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