搜索结果: 1-9 共查到“理论物理学 strings”相关记录9条 . 查询时间(0.179 秒)
It is shown that topologically stable cosmic strings can, in fact, appear to end or to break, even in theories without monopoles. This can occur whenever the spatial topology of the universe is nontri...
From wrapped M-branes to Calabi-Yau black holes and strings
Time and space time and space movement equation the black hole black string
2014/12/20
We study a class of D = 11 BPS spacetimes that describe M-branes wrapping supersymmetric 2 and 4-cycles of Calabi-Yau 3-folds. We analyze the geometrical significance of the supersymmetry constraints ...
On black strings & branes in Lovelock gravity
Black string membrane pure Einstein gravitational black holes vacuum constant curvature space
2014/12/20
It is well known that black strings and branes may be constructed in pure Einstein gravity simply by adding flat directions to a vacuum black hole solution. A similar construction holds in the presenc...
Gravity, strings, modular and quasimodular forms
Gravity strings modular and quasimodular forms Mathematical Physics
2012/6/19
Modular and quasimodular forms have played an important role in gravity and string theory. Eisenstein series have appeared systematically in the determination of spectrums and partition functions, in ...
Lorentzian varifolds and applications to closed relativistic strings
Lorentzian varifold closed relativistic strings General Relativity and Quantum Cosmology
2011/7/26
Abstract: We develop a suitable generalization of Almgrens theory of varifolds in a lorentzian setting, focusing on area, first variation, rectifiability, compactness and closure issues. Motivated by ...
Non-geometric Fluxes, Asymmetric Strings and Nonassociative Geometry
Non-geometric Fluxes Asymmetric Strings Nonassociative Geometry
2011/7/27
Abstract: We study closed bosonic strings propagating both in a flat background with constant H-flux and in its T-dual configurations. We define a conformal field theory capturing linear effects in th...
Gross-Neveu Models, Nonlinear Dirac Equations, Surfaces and Strings
Gross-Neveu Models Nonlinear Dirac Equations
2010/12/23
Recent studies of the thermodynamic phase diagrams of the Gross-Neveu model (GN2), and its chiral cousin, the NJL2 model, have shown that there are phases with inhomogeneous crystalline condensates. ...
We discuss aspects of global and gauged symmetries in quantum field theory and quantum gravity, focusing on discrete gauge symmetries. An effective Lagrangian description of $\Z_p$ gauge theories sho...
Conservation laws for strings in the Abelian Sandpile Model
Conservation laws Abelian Sandpile Model
2010/4/2
The Abelian Sandpile generates complex and beautiful patterns and seems to display allometry. On the plane, beyond patches, patterns periodic in both dimensions, we remark the presence of structures p...