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- W2962865178 abstract "We construct the most general Ricci-flat metrics in (D + n)-dimensions that preserve the R 1,n-1 × SO(D) isometry. The equations of motion are governed by the system of a GL(n, R)/SO(1, n - 1) scalar coset coupled to D-dimensional gravity. Among the solutions, we find a large class of smooth Lorentzian wormholes that connect two asymptotic flat spacetimes. In addition, we obtain new vacuum tachyonic wave solutions in D ≥ 4 dimensions, which fit the general definition of pp-waves in that there exists a covariantly constant null vector. The momenta of the tachyon waves are larger than their ADM masses. The world volume of the tachyon wave is R 1,2 , instead of R 1,1 for the usual vacuum pp-wave. We show that the tachyon wave solutions admit no Killing spinors, except in D = 4, in which case it preserves half of the supersymmetry. We also obtain a general class of p-brane wormhole and tachyon wave solutions where the R 1,n-1 part of the spacetime lies in the world volume of the p-branes. These include examples of M-branes and D3-brane. Furthermore, we obtain AdS tachyon waves in D ≥ 4 dimensions." @default.
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- W2962865178 date "2009-01-02" @default.
- W2962865178 modified "2023-09-26" @default.
- W2962865178 title "GL(n,R) Wormholes and Waves in Diverse Dimensions" @default.
- W2962865178 hasPublicationYear "2009" @default.
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