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Titlebook: Exact Solutions and Scalar Fields in Gravity; Recent Developments Alfredo Macias,Jorge L. Cervantes-Cota,Claus L?mme Book 2001 Springer Sci

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樓主: patch-test
51#
發(fā)表于 2025-3-30 10:52:23 | 只看該作者
Automatic Stabilizers RevisitedIntegrability of the the . (ME) which is an especial form of the SDYM equations for the Moyal bracket Lie algebra is studied..Infinite number of conservation laws and linear systems for ME are found. The twistor construction is also given.
52#
發(fā)表于 2025-3-30 16:20:36 | 只看該作者
State-Space Modulation and Demodulation,We reconsider the second order slow-roll approximation of Stewart and Lyth. For the resulting nonlinear ., we find a new eigenvalue spectrum of the spectral index in the ‘blue’ regime . . .. Some of the . values have consistent fits to the cumulative COBE data as well as to recent ground-base CMB experiments.
53#
發(fā)表于 2025-3-30 17:10:47 | 只看該作者
54#
發(fā)表于 2025-3-31 00:06:54 | 只看該作者
55#
發(fā)表于 2025-3-31 02:25:31 | 只看該作者
Inflation with a Blue Eigenvalue SpectrumWe reconsider the second order slow-roll approximation of Stewart and Lyth. For the resulting nonlinear ., we find a new eigenvalue spectrum of the spectral index in the ‘blue’ regime . . .. Some of the . values have consistent fits to the cumulative COBE data as well as to recent ground-base CMB experiments.
56#
發(fā)表于 2025-3-31 05:27:02 | 只看該作者
Discussion of the Theta Formula for the Ernst Potential of the Rigidly Rotating Disk of Dustr the Ernst potential[2]. The space-time coordinates of the problem enter the arguments of these functions via ultraelliptic line integrals which are related to a Riemann surface..The solution is reformulated so as to make it easier to handle and all integrals are transformed into definite real inte
57#
發(fā)表于 2025-3-31 13:13:46 | 只看該作者
The Superposition of Null Dust Beam in General Relativityrections. Exact time-independent solutions are given for the interaction region of outgoing and incoming Vaidya solutions and for the non-linear superposition of two cylindrically symmetric pencils of light propagating in the positive and negative axial directions.
58#
發(fā)表于 2025-3-31 15:43:00 | 只看該作者
59#
發(fā)表于 2025-3-31 18:48:13 | 只看該作者
The FRW Universes with Barotropic Fluids in Jordan-Brans-Dicke Theoryfficulties that have been overcome when the space is non-flat in scalar-tensor theories only if the energy-stress tensor is vacuous or describes stiff matter, incoherent radiation or ultrarelativistic matter. This paper reveals the dynamics for these and the other ideal fluid models, in non-flat spa
60#
發(fā)表于 2025-3-31 22:52:07 | 只看該作者
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