ar X iv : h ep - t h / 02 11 29 0 v 3 1 9 M ay 2 00 3 Higher dimensional black holes and supersymmetry

ar X iv : h ep - p h / 03 08 29 0 v 1 2 9 A ug 2 00 3 Holography , Entropy and Extra Dimensions

We show that higher dimensional models (brane worlds) in which the scale of quantum gravity M∗ is much smaller than the apparent scale MP ∼ 1019 GeV are in conflict with bounds arising from holography and black hole entropy. The thermodynamic entropy of astrophysical black holes and sub-horizon volumes during big bang nucleosynthesis exceed the relevant bounds unless M∗ > 10 (4−6) TeV, so a hie...

ar X iv : h ep - t h / 03 05 14 3 v 1 1 6 M ay 2 00 3 Krein structure of supersymmetry

We present supersymmetric positive definite scalar products together with natural Krein structures of supersymmetries.

ar X iv : h ep - p h / 04 05 11 9 v 1 1 3 M ay 2 00 4 The Lorentz and CPT violating effects on the charged

ar X iv : h ep - t h / 06 02 06 1 v 3 4 M ay 2 00 6 Strings , Black Holes , and Quantum Information

We find multiple relations between extremal black holes in string theory and 2-and 3-qubit systems in quantum information theory. We show that the entropy of the axion-dilaton extremal black hole is related to the concurrence of a 2-qubit state, whereas the entropy of the STU black holes, BPS as well as non-BPS, is related to the 3-tangle of a 3-qubit state. We relate the 3-qubit states with th...

ar X iv : h ep - p h / 04 02 19 0 v 2 2 6 M ay 2 00 4 1 Pentaquarks in the 10 F - and 10 F - plets