Quantum dynamics of strings in black hole space times

Details Quantum dynamics of strings in black hole space times Quantum dynamics of strings in black hole space times

Nov 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988nuphb.309..552d&link_type=abstract

Nuclear Physics B, Volume 309, Issue 3, p. 552-576.

Physics

Nuclear Physics

50

Scientific paper

We quantize a bosonic string in the D-dimensional Schwarzschild geometry following the method recently proposed by the present authors. This allows us to take into account strong-curvature effects of the black hole. We start from the exact motion of the center of mass of the string, and compute the quantum fluctuations around it to first and second order. This provides the dominant term for physical magnitudes in an expansion in powers of √α' / RS (√α' = lpl = Planck length, RS = Schwarzschild's radius). The mass spectrum and critical dimension are the same as in flat space-time but there is non-trivial elastic and inelastic scattering by the black hole. Ingoing and outgoing modes are introduced in a light-cone-gauge formalism. A linear transformation relating these modes desribes two main effects: (i) polarization changes and (ii) mixing of the particle and antiparticle modes reversing, at the same time, their right or left character.

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