1+1 string with quarks at the ends revisited

Details 1+1 string with quarks at the ends revisited 1+1 string with quarks at the ends revisited

1997-01-30

arxiv.org/abs/hep-th/9701193v1

Phys.Lett. B399 (1997) 274-280

Physics

High Energy Physics

High Energy Physics - Theory

9 pages, LaTeX 2.09

Scientific paper

10.1016/S0370-2693(97)00294-3

The canonical description is presented for the string with pointlike masses at the ends in 1+1 dimensions in two different gauges: in the proper time gauge and in the light cone one. The classical canonical transformation is written out explicitly, which relates physical variables in both gauges, and equivalence of two classical theories is demonstrated in such a way. Both theories are quantized, and it is shown that quantum theories are not unitary equivalent. It happens due to the fact that the canonical transformation depends on interaction. The quantum Poincare algebra proves to be closed in both cases, so that the requirement of Poincare covariance is not able to distinguish between two versions of the theory.

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