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Instantons from Low Energy String Actions

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Instantons from Low Energy String Actions. / M. Saffin, P.; Mazumdar, Anupam; J. Copeland, E.
In: Physics Letters B, Vol. 435, No. 1-2, 06.05.1998, p. 19-24.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

M. Saffin, P, Mazumdar, A & J. Copeland, E 1998, 'Instantons from Low Energy String Actions', Physics Letters B, vol. 435, no. 1-2, pp. 19-24. https://doi.org/10.1016/S0370-2693(98)00797-7

APA

M. Saffin, P., Mazumdar, A., & J. Copeland, E. (1998). Instantons from Low Energy String Actions. Physics Letters B, 435(1-2), 19-24. https://doi.org/10.1016/S0370-2693(98)00797-7

Vancouver

M. Saffin P, Mazumdar A, J. Copeland E. Instantons from Low Energy String Actions. Physics Letters B. 1998 May 6;435(1-2):19-24. doi: 10.1016/S0370-2693(98)00797-7

Author

M. Saffin, P. ; Mazumdar, Anupam ; J. Copeland, E. / Instantons from Low Energy String Actions. In: Physics Letters B. 1998 ; Vol. 435, No. 1-2. pp. 19-24.

Bibtex

@article{50d73834fce642beb91c769e89945bd4,
title = "Instantons from Low Energy String Actions",
abstract = "We look for instanton solutions in a class of two scalar field gravity models, which includes the low energy string action in four dimensions. In models where the matter field has a potential with a false vacuum, we find that non-singular instantons exist as long as the Dilaton field found in string theory has a potential with a minimum, and provide an example of such an instanton. The class of singular instanton solutions are also examined, and we find that depending on the parameter values, the volume factor of the Euclidean region does not always vanish fast enough at the singularity to make the action finite.",
author = "{M. Saffin}, P. and Anupam Mazumdar and {J. Copeland}, E.",
note = "revtex 6 pages with 3 figures. Minor numerical correction made",
year = "1998",
month = may,
day = "6",
doi = "10.1016/S0370-2693(98)00797-7",
language = "English",
volume = "435",
pages = "19--24",
journal = "Physics Letters B",
issn = "0370-2693",
publisher = "ELSEVIER SCIENCE BV",
number = "1-2",

}

RIS

TY - JOUR

T1 - Instantons from Low Energy String Actions

AU - M. Saffin, P.

AU - Mazumdar, Anupam

AU - J. Copeland, E.

N1 - revtex 6 pages with 3 figures. Minor numerical correction made

PY - 1998/5/6

Y1 - 1998/5/6

N2 - We look for instanton solutions in a class of two scalar field gravity models, which includes the low energy string action in four dimensions. In models where the matter field has a potential with a false vacuum, we find that non-singular instantons exist as long as the Dilaton field found in string theory has a potential with a minimum, and provide an example of such an instanton. The class of singular instanton solutions are also examined, and we find that depending on the parameter values, the volume factor of the Euclidean region does not always vanish fast enough at the singularity to make the action finite.

AB - We look for instanton solutions in a class of two scalar field gravity models, which includes the low energy string action in four dimensions. In models where the matter field has a potential with a false vacuum, we find that non-singular instantons exist as long as the Dilaton field found in string theory has a potential with a minimum, and provide an example of such an instanton. The class of singular instanton solutions are also examined, and we find that depending on the parameter values, the volume factor of the Euclidean region does not always vanish fast enough at the singularity to make the action finite.

U2 - 10.1016/S0370-2693(98)00797-7

DO - 10.1016/S0370-2693(98)00797-7

M3 - Journal article

VL - 435

SP - 19

EP - 24

JO - Physics Letters B

JF - Physics Letters B

SN - 0370-2693

IS - 1-2

ER -