搜索结果: 136-150 共查到“物理学 Space”相关记录210条 . 查询时间(0.143 秒)
Recessional velocities and Hubble's law in Schwarzschild-de Sitter space
Fermi coordinates Schwarzschild-de Sitter space Fermi velocity astrometric velocity spectroscopic velocity kinematic velocity superluminal velocity galaxy supercluste Hubble’s law far future Local Group expansion of space
2010/3/17
We consider a spacetime with empty Schwarzschild-de Sitter exterior and Schwarzschild-de Sitter interior metric for a spherical fluid with constant density. The fluid interior may be taken to represen...
The quantum interest conjecture in (3+1)-dimensional Minkowski space
Quantum inequalities quantum interest conjecture
2010/3/17
The quantum inequalities, and the closely related quantum interest conjecture, impose restrictions on the distribution of the energy density measured by any time-like observer, potentially preventing ...
de Sitter expansion with anisotropic fluid in Bianchi type-I space-time
Bianchi type-I de Sitter expansion cosmological constant anisotropic fluid
2010/3/17
Some features of the Bianchi type-I universes in the presence of a fluid that wields an anisotropic equation of state (EoS) parameter are discussed in the context of general relativity. The models tha...
Testing Relativistic Gravity and Detecting Gravitational Waves in Space
Gravity Detecting Gravitational Waves
2010/3/17
For testing gravity and detecting gravitational waves in space, deep-space laser ranging using drag-free spacecraft is a common method. Deep space provides a large arena and a long integration time. L...
Space-momentum correlations in 8 AGeV Au+Au collisions
space-momentum correlations elliptic flow fluctuations initial spatial eccentricity
2009/12/24
Within the RQMD model, space-momentum correlations, i.e. the correlations between final momentum anisotropy and initial eccentricity, are studied for 8 AGeV Au+Au events classified according to the mu...
Towards a gravitation theory in Berwald-Finsler space
Finsler geometry Berwald space field equation
2009/12/24
Finsler geometry is a natural and fundamental generalization of Riemann geometry. The Finsler structure depends on both coordinates and velocities. It is defined as a function on tangent bundle of a m...
Width dependent collisionless electron dynamics in the static fields of the shock ramp,2,Phase space portrait
Width dependent collisionless electron dynamics static fields shock ramp Phase space portrait
2009/11/13
We study numerically in detail the behaviour of electrons in the strongly inhomogeneous static magnetic and electric fields, which are typical for thin quasiperpendicular collisionless shocks. We pay ...
Phase space structure and fractal trajectories in 1½ degree of freedom Hamiltonian systems whose time dependence is quasiperiodic
Phase space structure fractal trajectories freedom Hamiltonian systems time dependence
2009/11/13
We consider particle motion in nonautonomous 1 degree of freedom Hamiltonian systems for which H(p,q,t) depends on N periodic functions of t with incommensurable frequencies. It is shown that in near-...
Deformed Clifford algebra and supersymmetric quantum mechanics on a phase space with applications in quantum optics
Cliff ord algebra supersymmetric quantum mechanics deformation quantization Wigner functions Jaynes-Cummings models
2010/4/13
In order to realize supersymmetric quantum mechanics methods on a four dimensional classical phase-space, the complexified Clifford algebra of this space is extended by deforming it with the Moyal sta...
Matching by solenoids in space charge dominated LEBTs
betatron matching solenoid coupling terms space charge force rotationally asymmetric
2009/9/17
The betatron matching of a rotationally asymmetric beam in space chargedominated low-energy beam transports (LEBTs) where solenoids are used forthe transverse matching has been studied. For better un...
On the Mini-Superambitwistor Space and 𝒩=8 Super-Yang-Mills Theory
self-dual Yang-Mills super-Yang-Mills Superambitwistor Space
2009/9/4
We construct a new supertwistor space suited for establishing a Penrose-Ward transform between certain bundles over this space and solutions to the 𝒩=8 super-Yang-Mills equations in three dime...
Rotations in the Space of Split Octonions
Nonassociative algebras Rotations Split Octonions
2009/9/4
The geometrical application of split octonions is considered. The new representation of products of the basis units of split octonionic having David's star shape (instead of the Fano triangle) is pres...
Analytical treatment of the nonlinear electron cloud effect and the combined effects with beam-beam and space charge nonlinear forces in storage rings
electron cloud effect beam-beam effect space charge effect BEPCⅡ
2009/8/17
In this paper we treat first some nonlinear beam dynamics problems in storage rings, such as beam dynamic apertures due to magnetic multipoles, wiggles, beam-beam effects, nonlinear space charge effec...
Quantum electrodynamics with arbitrary charge on a noncommutative space
noncommutative quantum electrodynamics charge
2009/8/14
Using the Seiberg-Witten map, we obtain a quantum electrodynamics on a
noncommutative space, which has arbitrary charge and keep the gauge
invariance to at the leading order in theta. The one-loop d...
SU(2) Group Space Decimation有效作用量的Monte Carlo研究
SU(2) Group Space Decimation Monte Carlo 有效作用量
2009/8/14
我们在44周期性正方格点对SU(2)-Y(120)群Group Space Decimation有效近似作用量进行了Monte Carlo模拟, 发现有效作用量系统在β≤9没有凝固点, 但有效作用量系统的内能曲线与SU(2) Wilson作用量的内能曲线有差别. 这说明, 虽然Group Space Decimation方法原则上可使分立子群代替连续群进行Monte Carlo模拟, 但就减少计算...