INVESTIGADORES
SIMEONE Claudio Mauricio
congresos y reuniones científicas
Título:
Adiabatic renormalization in theories with modified dispersion relations
Autor/es:
D. LOPEZ NACIR, F.D. MAZZITELLI, C. SIMEONE
Lugar:
Barcelona
Reunión:
Conferencia; 2nd International Conference On Quantum Theories And Renormalization Group In Gravity And Cosmology (IRGAC 2006); 2006
Resumen:
We generalize the adiabatic renormalization to theories with dispersion
relations modified at energies higher than a new scale M_C. We obtain
explicit expressions for the mean value of the stress tensor in the adiabatic
vacuum, up to the second adiabatic order. We show that for any dispersion
relation the divergences can be absorbed into the bare gravitational constants
of the theory. We also point out that, depending on the renormalization
prescription, the renormalized stress tensor may contain finite trans-Planckian
corrections even in the limit M_C-->infinity.