Zobrazeno 1 - 10
of 1 491
pro vyhledávání: '"Kummer, W."'
Autor:
Kummer, W. H.
International Telemetering Conference Proceedings / October 18-20, 1977 / Hyatt House Hotel, Los Angeles, California
Self-steering arrays using complete receiver-transmitter-signal processing systems to direct the beam of an antenna automaticall
Self-steering arrays using complete receiver-transmitter-signal processing systems to direct the beam of an antenna automaticall
Externí odkaz:
http://hdl.handle.net/10150/609722
http://arizona.openrepository.com/arizona/handle/10150/609722
http://arizona.openrepository.com/arizona/handle/10150/609722
Autor:
Hofmann, D., Kummer, W.
Publikováno v:
Eur.Phys.J.C48:291-301,2006
The infrared problem of the effective action in 2D is discussed in the framework of the Covariant Perturbation Theory. The divergences are regularised by a mass and the leading term is evaluated up to the third order of perturbation theory. A summati
Externí odkaz:
http://arxiv.org/abs/gr-qc/0512163
Publikováno v:
Class.Quant.Grav.23:3075-3101,2006; Class.Quant.Grav.23:3075-3102,2006
Requiring the presence of a horizon imposes constraints on the physical phase space. After a careful analysis of dilaton gravity in 2D with boundaries (including the Schwarzschild and Witten black holes as prominent examples), it is shown that the cl
Externí odkaz:
http://arxiv.org/abs/hep-th/0512230
Publikováno v:
Class.Quant.Grav. 22 (2005) 1361-1382
Euclidean dilaton gravity in two dimensions is studied exploiting its representation as a complexified first order gravity model. All local classical solutions are obtained. A global discussion reveals that for a given model only a restricted class o
Externí odkaz:
http://arxiv.org/abs/hep-th/0412007
Autor:
Bergamin, L., Kummer, W.
Publikováno v:
Eur.Phys.J.C39:S53-S63,2005
The integrability of N=(2,2) dilaton supergravity in two dimensions is studied by the use of the graded Poisson Sigma model approach. Though important differences compared to the purely bosonic models are found, the general analytic solutions are obt
Externí odkaz:
http://arxiv.org/abs/hep-th/0411204
Autor:
Kummer, W., Schuetz, H.
Publikováno v:
Eur.Phys.J.C42:227-241,2005
Beside diffeomorphism invariance also manifest SO(3,1) local Lorentz invariance is implemented in a formulation of Einstein Gravity (with or without cosmological term) in terms of initially completely independent vielbein and spin connection variable
Externí odkaz:
http://arxiv.org/abs/gr-qc/0410017
Autor:
Hofmann, D., Kummer, W.
Publikováno v:
Eur.Phys.J. C40 (2005) 275-286
The computation of the radiation flux related to the Hawking temperature of a Schwarzschild Black Hole or another geometric background is still well-known to be fraught with a number of delicate problems. In spherical reduction, as shown by one of th
Externí odkaz:
http://arxiv.org/abs/gr-qc/0408088
Publikováno v:
JHEP 0405 (2004) 060
General N=(1,1) dilaton supergravity in two dimensions allows a background independent exact quantization of the geometric part, if these theories are formulated as specific graded Poisson-sigma models. The strategy developed for the bosonic case can
Externí odkaz:
http://arxiv.org/abs/hep-th/0404004
Autor:
Bergamin, L., Kummer, W.
Publikováno v:
Eur.Phys.J.C39:S41-S52,2005
The formalism of graded Poisson-sigma models allows the construction of N=(2,2) dilaton supergravity in terms of a minimal number of fields. For the gauged chiral U(1) symmetry the full action, involving all fermionic contributions, is derived. The t
Externí odkaz:
http://arxiv.org/abs/hep-th/0402138
Autor:
Bajc, B., Pavsic, M., Mangano, G., Grumiller, D., Kummer, W., Liu, J. T., Maceda, M., Madore, J.
Publikováno v:
Bled workshops in physics, Vol.4, No. 2-3, DMFA Zaloznistvo, Ljubljana, Dec. 2003
Contents of Part 2: 11. Supersymmetric Grandunification and Fermion Masses (B. Bajc) 12. General Principles of Brane Kinematics and Dynamics (M. Pavsic) 13. Cosmological Neutrinos (G. Mangano) 14. The Problem of Mass (C.D. Froggatt) 15. How to Approa
Externí odkaz:
http://arxiv.org/abs/hep-ph/0401055