I.F.T.
Almuerzo-Seminario
(Lunch seminar)
March 16th 1999, 14:00 p.m.
Spacetime Foam and Thermodynamics
José Luis Rosales
U.A.M.
From a picture of spacetime foam as a dilute gas of gravitational
instantons and the existence of horizons in equilibrium with
radiation, we obtain strong thermodynamical constraints. We evaluate
these for two instantons, namely, S^4 and S^2xS^2. The temperature of
radiation can be exactly computed, e.g., if it consists on charged
fields at the physical scale of the electroweak interactions.
Interestingly enough, it turns out to be almost independent from the
two topologies considered so far and we conjecture that such a
constant spacetime temperature would represent a Quantum Field Theory
parameter deduced from Planck-scale Physics.
The almuerzo-seminario is
intended to be an informal seminar and an open forum for discussion.
You are wellcome to bring your own
bocata (sandwich), or coffee or tea.
Where: Modulo C-XVI, 3rd floor,
Facultad de Ciencias U.A.M., C.U. Cantoblanco, 28049-Madrid
To get more information about this seminar e-mail
Tomás Ortín
or phone +34-91-397-8546
Last modified: Thu Feb 4 17:25:33 WET 1999