88 citations · 192 across the 10 of their papers we have counts for
7 papers · 1 filter
QFT, String Temperature and the String Phase of De Sitter Space-time
M. Ram'on Medrano, N. S'anchez
The density of mass levels ρ(m) and the critical temperature for strings in de Sitter space-time are found. QFT and string theory in de Sitter space are compared. A `Dual'-transfor…
The Black Hole: Scatterer, Absorber and Emitter of Particles
N. Sanchez
Accurate and powerful computational methods developed by the author for the wave scattering by black holes allow to obtain the highly non trivial total absorption spectrum of the B…
Lectures on String Theory in Curved Spacetimes
H. J. de Vega, N. sánchez
Recent progress on string theory in curved spacetimes is reviewed. The string dynamics in cosmological and black hole spacetimes is investigated.The methods to solve the string equ…
Circular Strings and Multi-Strings in de Sitter and Anti de Sitter Spacetimes
H. J. de Vega, A. L. Larsen, N. Sánchez
The exact general solution of circular strings in dimensional de Sitter spacetime is described completely in terms of elliptic functions. The novel feature here is that one s…
Strings and Multi-Strings in Black Hole and Cosmological Spacetimes
A. L. Larsen, N. Sánchez
Recent results on classical and quantum strings in a variety of black hole and cosmological spacetimes, in various dimensions, are presented. The curved backgrounds under considera…
CLASSICAL SPLITTING OF FUNDAMENTAL STRINGS
H. J. de Vega, J. Ramírez Mittelbrunn, M. Ramón Medrano +1
We find exact solutions of the string equations of motion and constraints describing the {\em classical}\ splitting of a string into two. We show that for the same Cauchy data, the…