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Djordje Minic
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Born Reciprocity, String Theory and the Real World
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After many years, the deep nature of spacetime
in string theory remains an enigma. In this
talk we discuss the concept of Born reciprocity
in order to provide a new point of view on
string theory in which spacetime is a derived
dynamical concept. This viewpoint may be
thought of as a dynamical chiral phase space
formulation of string theory, in which Born
reciprocity is implemented as a choice of
a Lagrangian submanifold of the phase space,
and amounts to a generalization of T-duality.
In this approach the fundamental symmetry
of string theory contains phase space diffeomorphism
invariance and the underlying string geometry
should be understood in terms of dynamical
bi-Lagrangian manifolds and an apparently
new geometric structure, somewhat reminiscent
of para-quaternionic geometry, which we call
Born geometry. We also discuss how this new
point of view on string theory addresses
the question of its relation to the real
world.
(This talk is based on the joint work with
L. Freidel [Perimeter] and R. G. Leigh [Urbana]
- arXiv:1307.7080 [hep-th])
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