Is the Polyakov path integral prescription too restrictive?
| dc.creator | Mathur, Samir D. | |
| dc.date | 1993-06-18 | |
| dc.date.accessioned | 2026-07-07T04:19:29Z | |
| dc.date.available | 2026-07-07T04:19:29Z | |
| dc.description | In the first quantised description of strings, we integrate over target space co-ordinates $X^μ$ and world sheet metrics $g_{αβ}$. Such path integrals give scattering amplitudes between the `in' and `out' vacuua for a time-dependent target space geometry. For a complete description of `particle creation' and the corresponding backreaction, we need instead the causal amplitudes obtained from an `initial value formulation'. We argue, using the analogy of a scalar particle in curved space, that in the first quantised path integral one should integrate over $X^μ$ and world sheet {\it zweibiens}. This extended formalism can be made to yield causal amplitudes; it also naturally allows incorporation of density matrices in a covariant manner. (This paper is an expanded version of hep-th 9301044) | |
| dc.description | 37 pages, harvmac | |
| dc.identifier | https://arxiv.org/abs/hep-th/9306090 | |
| dc.identifier | http://arxiv.org/abs/hep-th/9306090 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/53571 | |
| dc.subject | High Energy Physics - Theory | |
| dc.subject | General Relativity and Quantum Cosmology | |
| dc.title | Is the Polyakov path integral prescription too restrictive? | |
| dc.type | text |