NONCOMMUTATIVITY IN LINEAR DILATON BACKGROUND
نویسندگان
چکیده
منابع مشابه
Dilaton Cosmology, Noncommutativity and Generalized Uncertainty Principle
The effects of noncommutativity and of the existence of a minimal length on the phase space of a dilatonic cosmological model are investigated. The existence of a minimum length, results in the Generalized Uncertainty Principle (GUP), which is a deformed Heisenberg algebra between the minisuperspace variables and their momenta operators. We extend these deformed commutating relations to the cor...
متن کاملDirichlet boundary state in a linear dilaton background.
Dirichlet-branes have emerged as important objects in studying nonperturbative string theory. It is important to generalize these objects to more general backgrounds other than the usual flat background. The simplest case is the linear dilaton condensate. The usual Dirichlet boundary condition violates conformal invariance in such a background. We show that by switching on a certain boundary in...
متن کاملDiscrete States in Light-Like Linear Dilaton Background
We study the spectrum of bosonic strings in the light-like linear dilaton background and find discrete states. These are physical states which exist only at specific values of momentum. All except one discrete states generate spacetime symmetries. The exceptional discrete state corresponds to constraints which are deformations of conservation laws. The constraints resemble those arising from sy...
متن کاملLight-cone gauge superstring field theory in linear dilaton background
The Feynman amplitudes of light-cone gauge superstring field theory suffer from various divergences. In order to regularize them, we study the theory in linear dilaton background Φ = −iQX with the number of spacetime dimensions fixed. We show that the theory with the Feynman iε (ε > 0) and Q > 10 yields finite results. e-mail: [email protected]
متن کاملD-Brane solutions in a light-like linear dilaton background
The light-like linear dilaton background presents a simple time dependent solution of type II supergravity equations of motion that preserves 1/2 supersymmetry in ten dimensions. We construct supergravity D-brane solutions in a linear dilaton background starting from the known intersecting brane solutions in string theory. By applying a Penrose limit on the intersecting (NS1−NS5− NS5)brane solu...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Modern Physics Letters A
سال: 2001
ISSN: 0217-7323,1793-6632
DOI: 10.1142/s0217732301005655