搜索结果: 46-60 共查到“知识库 物理学 Geometry”相关记录62条 . 查询时间(0.088 秒)
Cold atom scattering by cavity fields in a two-dimensional geometry
Cold atom scattering cavity fields two-dimensional geometry
2010/3/10
The quantum theory of the cold atom scattering by cavity fields in a two-dimensional geometry is presented. A distinct regime from the usual Raman-Nath, Bragg and Stern-Gerlach regimes is investigated...
Maximal extension of the Schwarzschild spacetime inspired by noncommutative geometry
noncommutative geometry Schwarzschild spacetime
2010/3/17
We derive a transformation of the noncommutative geometry inspired Schwarzschild solution
into new coordinates such that the apparent unphysical singularities of the metric are removed.
Moreover, we...
Critical phenomena and information geometry in black hole physics
Critical phenomena black hole physics information geometry
2010/3/17
We discuss the use of information geometry in black hole physics and present the outcomes. The type of information geometry we utilize in this approach is the thermodynamic (Ruppeiner) geometry define...
Spacetime geometry in (2+1)-gravity via measurements with returning lightrays
Spacetime geometry (2+1)-gravity
2010/3/17
We consider an observer in a (2+1)-spacetime without matter and cosmological constant who measures spacetime geometry by emitting lightrays which return to him at a later time. We investigate several ...
Acoustic geometry for general relativistic barotropic irrotational fluid flow
acoustic spacetime relativistic fluid flow barotropic irrotational
2010/3/17
"Acoustic spacetimes", in which techniques of differential geometry are used to investigate sound propagation in moving fluids, have attracted considerable attention over the last few decades. Most o...
Fluctuating Twistor-Beam Solutions and Holographic Pre-Quantum Kerr-Schild Geometry
Fluctuating Twistor-Beam Solutions Holographic Pre-Quantum Kerr-Schild Geometry
2010/3/17
Kerr-Schild (KS) geometry is based on a congruence of twistor null lines which forms a holographic space-time determined by the Kerr theorem. We describe in details integration of the non-stationary D...
Acoustic excitation of superharmonic capillary waves on a meniscus in a planar micro-geometry
Acoustic excitation superharmonic capillary waves micro-geometry
2010/4/6
The effects of ultrasound on the dynamics of an air-water meniscus in a planar micro-geometry are investigated experimentally. The sonicated meniscus exhibits harmonic traveling waves or standing wave...
Projective Geometry and $\cal PT$-Symmetric Dirac Hamiltonian
Projective Geometry $\cal PT$-Symmetric Dirac Hamiltonian
2010/4/13
The $(3 + 1)$-dimensional (generalized) Dirac equation is shown to have the same form as the equation expressing the condition that a given point lies on a given line in 3-dimensional projective space...
Entanglement witnesses and geometry of entanglement of two--qutrit states
Entanglement witnesses geometry of entanglement two--qutrit states
2010/4/12
We construct entanglement witnesses with regard to the geometric structure of the Hilbert--Schmidt space and investigate the geometry of entanglement. In particular, for a two--parameter family of two...
Five Dimensional Stiff Fluid Models in Lyra Geometry
Five dimensional cosmological model stiff fluid Lyra geometry
2010/4/8
We have constructed stiff fluid cosmological models in five dimensional space-time based on Lyra geometry. Some physical and geometrical properties of the models are discussed.
Vacuum Solutions of Classical Gravity on Cyclic Groups from Noncommutative Geometry
non-unitary link variable Connes' distance formula vacuum solution
noncommutative geometry cyclic group
2007/8/15
2002Vol.37No.1pp.11-14DOI:
Vacuum Solutions of Classical Gravity on Cyclic Groups from Noncommutative Geometry
DAI Jian and SONG Xing-Chang
Institute of Theoretical Phys...
Multisymplectic Geometry for the Seismic Wave Equation
multisymplectic geometry
multisymplectic formulation seismic wave equation
2007/8/15
2004Vol.41No.4pp.561-566DOI:
Multisymplectic Geometry for the Seismic Wave Equation
CHEN Jing-Bo
Institute of Geology and Geophysics, the Chinese Academy of Sciences,...
Noncommutative Geometry and Classical Orbits of Particles
in a Central Force Potential
noncommutative geometry planetary orbits
2007/8/15
2004Vol.42No.2pp.183-184DOI:
Noncommutative Geometry and Classical Orbits of Particles
in a Central Force Potential
B. Mirza1,2 and M. Dehghani1
1 Department of Physics,...
Non-Riemannian Geometry of Twisted Flux Tubes
Twisted flux tubes Non-Riemannanian geometry
2010/10/13
New examples of the theory recently proposed by Ricca [PRA(1991)] on the generalization of Da Rios-Betchov intrinsic equations on curvature and torsion of classical non-Riemannian vortex higher-dimens...
Causal Geometry of Einstein-Vacuum Spacetimes with finite curvature flux
Einstein-Vacuum Spacetimes finite curvature flux
2014/4/3
One of the central difficulties in connection to the L^2 bounded curvature conjecture in general relativity is to be able to control the causal structure of spacetimes with this very limited regularit...