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Quenched, Minisuperspace, Bosonic $p$-brane Propagator


S. Ansoldi1
Dipartimento di Fisica Teorica dell'Università,
Istituto Nazionale di Fisica Nucleare, Sezione di Trieste,
Strada Costiera 11, 34014-Trieste, Italy


A. Aurilia2
Department of Physics, California State Polytechnic University
Pomona, CA 91768


C. Castro3
Center for Theoretical Studies of Physical Systems
Clark Atlanta University, Atlanta, GA30314


E.Spallucci4
Dipartimento di Fisica Teorica dell'Università,
Istituto Nazionale di Fisica Nucleare, Sezione di Trieste,
Strada Costiera 11, 34014-Trieste, Italy


Abstract:

We borrow the minisuperspace approximation from Quantum Cosmology and the quenching approximation from $QCD$ in order to derive a new form of the bosonic $p$-brane propagator. In this new approximation we obtain an exact description of both the collective mode deformation of the brane and the center of mass dynamics in the target spacetime. The collective mode dynamics is a generalization of string dynamics in terms of area variables. The final result is that the evolution of a $p$-brane in the quenched-minisuperspace approximation is formally equivalent to the effective motion of a particle in a spacetime where points as well as hypersurfaces are considered on the same footing as fundamental geometrical objects. This geometric equivalence leads us to define a new tension-shell condition that is a direct extension of the Klein-Gordon condition for material particles to the case of a physical $p$-brane.




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Stefano Ansoldi