TL;DR
This paper constructs exact D-brane solutions in Lorentzian AdS(3) by developing a novel Euclidean conformal field theory framework and analytically continuing to Lorentzian signature, enabling precise boundary state formulations.
Contribution
It introduces a new class of Euclidean CFTs that accurately model Lorentzian AdS(3) D-branes through analytic continuation, expanding the toolkit for string theory in curved spacetimes.
Findings
Exact boundary states for symmetric D-branes in AdS(3)
New Euclidean CFT framework for Lorentzian AdS(3)
Analytic continuation links Euclidean and Lorentzian CFT results
Abstract
We study the exact construction of D-branes in Lorentzian AdS(3). We start by defining a family of conformal field theories that gives a natural Euclidean version of the SL(2,R) CFT and does not correspond to H(3)+, the analytic continuation of AdS(3). We argue that one can recuperate the exact CFT results of Lorentzian AdS(3), upon an analytic continuation in the moduli space of these conformal field theories. Then we construct exact boundary states for various symmetric and symmetry-breaking D-branes in AdS(3).
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