### 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 | Inglés |
---|---|

Número de artículo | 063501 |

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

Volumen | 77 |

N.º | 6 |

DOI | |

Estado | Publicada - 3 mar 2008 |

### Áreas temáticas de ASJC Scopus

- Física nuclear y de alta energía
- Física y astronomía (miscelánea)

## Huella Profundice en los temas de investigación de 'Counting the negative eigenvalues of the thermalon in three dimensions'. En conjunto forman una huella única.

## Citar esto

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

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