ar X iv : h ep - t h / 98 10 03 9 v 1 6 O ct 1 99 8 Remarks on Nöther charges and black holes en - tropy

ar X iv : h ep - t h / 98 10 09 0 v 1 1 3 O ct 1 99 8 UTF 423 BPS Black Holes in Gauged N = 4 , D = 4 Supergravity

We find solutions of the bosonic sector of gauged N=4, D=4 SU(2)×SU(2) supergravity, which represent dilaton black holes with toroidal or spherical event horizons. The axion is consistently truncated, and the gauge group is broken to U(1)×U(1). The spherical black holes carry two electric and two magnetic abelian charges, whereas the toroidal holes have vanishing magnetic charges. The spacetime...

ar X iv : h ep - t h / 96 10 06 1 v 1 9 O ct 1 99 6 Stimulated emission of particles by 1 + 1 dimensional black holes ∗

The stimulated emission of massless bosons by a relativistic and the CGHS black hole are studied for real and complex scalar fields. The radiations induced by one-particle and thermal states are considered and their thermal properties investigated near the horizon. These exhibit both thermal and non-thermal properties for the two black-hole models.

ar X iv : h ep - e x / 99 10 03 6 v 1 1 8 O ct 1 99 9 EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH CERN – EP / 99 – 139 7 October 1999

This paper is meant as a contribution to the often debated subject of how to combine data which appear to be in mutual disagreement. As a practical example, the ǫ ′ /ǫ determinations have been considered.

ar X iv : h ep - p h / 99 10 24 8 v 1 6 O ct 1 99 9 1 Effect of σ ( 600 ) - Production in pp̄ → 3 π 0 at rest

ar X iv : h ep - t h / 98 03 05 9 v 1 6 M ar 1 99 8 A NEW CLASS OF INTEGRABLE MODELS OF 1 + 1 DIMENSIONAL DILATON GRAVITY COUPLED TO SCALAR MATTER

Integrable models of 1 + 1 dimensional gravity coupled to scalar and vector fields are briefly reviewed. A new class of integrable models with nonminimal coupling to scalar fields is constructed and discussed.