Showing 1999 · hep-thShow all

10 papers · 2 filters

hep-th1999★ 9 cited

Exotic Gauge Theories from Tensor Calculus

Friedemann Brandt, Joan Simon, Ulrich Theis

We construct non-standard interactions between exterior form gauge fields by gauging a particular global symmetry of the Einstein-Maxwell action for such fields. Furthermore we dis…

hep-th1999

Supersymmetric Worldvolume Solitons

Joan Simón

The general criteria for finding bosonic supersymmetric worldvolume solitons is reviewed. We concentrate on D-branes, discussing in particular, bion/dyon solutions and D3 branes on…

hep-th1999★ 40 cited

Rigid and gauge Noether symmetries for constrained systems

J. M. Pons, J. Antonio Garcia

We develop the general theory of Noether symmetries for constrained systems. In our derivation, the Dirac bracket structure with respect to the primary constraints appears naturall…

hep-th1999★ 52 cited

Supersymmetric Baryonic Branes

Joaquim Gomis, Alfonso Ramallo, Joan Simon +1

We derive an energy bound for a `baryonic' D5-brane probe in the background near the horizon of D3-branes. Configurations saturating the bound are shown to be…

hep-th1999★ 21 cited

On the concept of determinant for the differential operators of Quantum Physics

E. Elizalde

The concept of determinant for a linear operator in an infinite-dimensional space is addressed, by using the derivative of the operator's zeta-function (following Ray and Singer) a…

hep-th1999★ 58 cited

Casimir Energies for Spherically Symmetric Cavities

Guido Cognola, Emilio Elizalde, Klaus Kirsten

A general calculation of Casimir energies --in an arbitrary number of dimensions-- for massless quantized fields in spherically symmetric cavities is carried out. All the most comm…

hep-th1999★ 49 cited

Finite energy Dirac-Born-Infeld monopoles and string junctions

Jerome Gauntlett, Chris Koehl, David Mateos +2

It is shown that the worldvolume field theory of a single D3-brane in a supergravity D3-brane background admits finite energy, and non-singular, abelian monopoles and dyons preserv…

hep-th1999★ 31 cited

Possible quantum instability of primordial black holes

E. Elizalde, S. Nojiri, S. D. Odintsov

Evidence for the possible existence of a quantum process opposite to the famous Hawking radiation (evaporation) of black holes is presented. This new phenomenon could be very relev…

hep-th1999★ 7 cited

Chiral lagrangians and the QCD string

J. Alfaro, A. Dobado, D. Espriu

We propose a method to derive the low-energy efective action of QCD assuming that the long-distance properties of strong interactions can be described by a string theory. We bypass…

hep-th1999★ 56 cited

BPS solutions of a D5-brane worldvolume in a D3-brane background from superalgebras

Ben Craps, Joaquim Gomis, David Mateos +1

The BPS method is used to find BPS solutions of the worldvolume theory of a D5-brane in the near horizon geometry of a D3-brane. The BPS bound is interpreted in terms of the `maxim…