Publicación: N-DIMENSIONAL STATIC AND EVOLVING LORENTZIAN WORMHOLES WITH A COSMOLOGICAL CONSTANT
| dc.creator | YOSELIN MAURICIO CATALDO MONSALVES | |
| dc.date | 2011 | |
| dc.date.accessioned | 2025-01-10T14:45:23Z | |
| dc.date.available | 2025-01-10T14:45:23Z | |
| dc.date.issued | 2011 | |
| dc.description.abstract | WE PRESENT A FAMILY OF STATIC AND EVOLVING SPHERICALLY SYMMETRIC LORENTZIAN WORMHOLE SOLUTIONS IN N+1 DIMENSIONAL EINSTEIN GRAVITY. IN GENERAL, FOR STATIC WORMHOLES, WE REQUIRE THAT AT LEAST THE RADIAL PRESSURE HAS A BAROTROPIC EQUATION OF STATE OF THE FORM PR=?R?, WHERE THE STATE PARAMETER ?R IS CONSTANT. ON THE OTHER HAND, IT IS SHOWN THAT IN ANY DIMENSION N?3, WITH ?(R)=?=0 AND ANISOTROPIC BAROTROPIC PRESSURE WITH CONSTANT STATE PARAMETERS, STATIC WORMHOLE CONFIGURATIONS ARE ALWAYS ASYMPTOTICALLY FLAT SPACETIMES, WHILE IN 2+1 GRAVITY THERE ARE NOT ONLY ASYMPTOTICALLY FLAT STATIC WORMHOLES AND ALSO MORE GENERAL ONES. IN THIS CASE, THE MATTER SUSTAINING THE THREE-DIMENSIONAL WORMHOLE MAY BE ONLY A PRESSURELESS FLUID. IN THE CASE OF EVOLVING WORMHOLES WITH N?3, THE PRESENCE OF A COSMOLOGICAL CONSTANT LEADS TO AN EXPANSION OR CONTRACTION OF THE WORMHOLE CONFIGURATIONS: FOR POSITIVE COSMOLOGICAL CONSTANT WE HAVE WORMHOLES WHICH EXPAND FOREVER AND, FOR NEGATIVE COSMOLOGICAL CONSTANT WE HAVE WORMHOLES WHICH EXPAND TO A MAXIMUM VALUE AND THEN RECOLLAPSE. IN THE ABSENCE OF A COSMOLOGICAL CONSTANT THE WORMHOLE EXPANDS WITH CONSTANT VELOCITY, I.E WITHOUT ACCELERATION OR DECELERATION. IN 2+1 DIMENSIONS THE EXPANDING WORMHOLES ALWAYS HAVE AN ISOTROPIC AND HOMOGENEOUS PRESSURE, DEPENDING ONLY ON THE TIME COORDINATE. | |
| dc.format | application/pdf | |
| dc.identifier.doi | 10.1103/PhysRevD.83.044050 | |
| dc.identifier.issn | 2470-0029 | |
| dc.identifier.issn | 2470-0010 | |
| dc.identifier.issn | 1550-2368 | |
| dc.identifier.issn | 1550-7998 | |
| dc.identifier.uri | https://repositorio.ubiobio.cl/handle/123456789/8833 | |
| dc.language | spa | |
| dc.publisher | PHYSICAL REVIEW D | |
| dc.relation.uri | 10.1103/PhysRevD.83.044050 | |
| dc.rights | PUBLICADA | |
| dc.title | N-DIMENSIONAL STATIC AND EVOLVING LORENTZIAN WORMHOLES WITH A COSMOLOGICAL CONSTANT | |
| dc.type | ARTÍCULO | |
| dspace.entity.type | Publication | |
| ubb.Estado | PUBLICADA | |
| ubb.Otra Reparticion | FACULTAD DE CIENCIAS | |
| ubb.Sede | CONCEPCIÓN |
