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9 papers · 2 filters
Acceleration-Enlarged Symmetries in Nonrelativistic Space-Time with a Cosmological Constant
J. Lukierski, P. C. Stichel, W. J. Zakrzewski
By considering the nonrelativistic limit of de-Sitter geometry one obtains the nonrelativistic space-time with a cosmological constant and Newton-Hooke (NH) symmetries. We show tha…
D=11 massless superparticle covariant quantization, pure spinor BRST charge and hidden symmetries
Igor A. Bandos
We consider the covariant quantization of the D=11 massless superparticle (M0-brane) in the spinor moving frame or twistor-like Lorentz harmonics formulation. The action involves t…
Hawking radiation from extremal and non-extremal black holes
R. Balbinot, A. Fabbri, S. Farese +1
The relationship between Hawking radiation emitted by non extremal and extremal Reissner Nordstrom black holes is critically analyzed. A careful study of a series of regular collap…
Q7-branes and their coupling to IIB supergravity
Eric Bergshoeff, Jelle Hartong, Dmitri Sorokin
We show how, by making use of a new basis of the IIB supergravity axion-dilaton coset, SL(2,R)/SO(2), 7-branes that belong to different conjugacy classes of the duality group SL(2,…
Spinor moving frame, M0-brane covariant BRST quantization and intrinsic complexity of the pure spinor approach
Igor A. Bandos
To exhibit the possible origin of the inner complexity of the Berkovits's pure spinor approach, we consider the covariant BRST quantization of the D=11 massless superparticle (M0-b…
Quantum Effects in Black Holes from the Schwarzschild Black String?
Alessandro Fabbri, Giovanni Paolo Procopio
The holographic conjecture for black holes localized on a 3-brane in Randall-Sundrum braneworld models RS2 predicts the existence of a classical 5D time dependent solution dual to…