### Resumen

Some years ago it was shown that the cosmological constant may be reduced by thermal production of membranes that, after nucleation, collapse into a black hole. The probability of the process was calculated in the leading semiclassical approximation by studying an associated Euclidean configuration called the thermalon. Here we investigate the thermalon in three spacetime dimensions, describing the nucleation of closed strings that collapse into point particle singularities. In this context we may analyze the one-loop structure without the well-known problems brought in by the propagating gravitational degrees of freedom. We found that the coupling to gravity may increase the number of negative eigenvalues of the operator.

Idioma original | English |
---|---|

Número de artículo | 063501 |

Publicación | Physical Review D - Particles, Fields, Gravitation and Cosmology |

Volumen | 77 |

N.º | 6 |

DOI | |

Estado | Published - 3 mar 2008 |

### Huella dactilar

### ASJC Scopus subject areas

- Nuclear and High Energy Physics
- Physics and Astronomy (miscellaneous)

### Citar esto

*Physical Review D - Particles, Fields, Gravitation and Cosmology*,

*77*(6), [063501]. https://doi.org/10.1103/PhysRevD.77.063501

}

*Physical Review D - Particles, Fields, Gravitation and Cosmology*, vol. 77, n.º 6, 063501. https://doi.org/10.1103/PhysRevD.77.063501

**Counting the negative eigenvalues of the thermalon in three dimensions.** / Aros, Rodrigo; Gomberoff, Andrés; Montecinos, Alejandra.

Resultado de la investigación: Article

TY - JOUR

T1 - Counting the negative eigenvalues of the thermalon in three dimensions

AU - Aros, Rodrigo

AU - Gomberoff, Andrés

AU - Montecinos, Alejandra

PY - 2008/3/3

Y1 - 2008/3/3

N2 - Some years ago it was shown that the cosmological constant may be reduced by thermal production of membranes that, after nucleation, collapse into a black hole. The probability of the process was calculated in the leading semiclassical approximation by studying an associated Euclidean configuration called the thermalon. Here we investigate the thermalon in three spacetime dimensions, describing the nucleation of closed strings that collapse into point particle singularities. In this context we may analyze the one-loop structure without the well-known problems brought in by the propagating gravitational degrees of freedom. We found that the coupling to gravity may increase the number of negative eigenvalues of the operator.

AB - Some years ago it was shown that the cosmological constant may be reduced by thermal production of membranes that, after nucleation, collapse into a black hole. The probability of the process was calculated in the leading semiclassical approximation by studying an associated Euclidean configuration called the thermalon. Here we investigate the thermalon in three spacetime dimensions, describing the nucleation of closed strings that collapse into point particle singularities. In this context we may analyze the one-loop structure without the well-known problems brought in by the propagating gravitational degrees of freedom. We found that the coupling to gravity may increase the number of negative eigenvalues of the operator.

UR - http://www.scopus.com/inward/record.url?scp=41449093140&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.77.063501

DO - 10.1103/PhysRevD.77.063501

M3 - Article

AN - SCOPUS:41449093140

VL - 77

JO - Physical review D: Particles and fields

JF - Physical review D: Particles and fields

SN - 1550-7998

IS - 6

M1 - 063501

ER -