Localized (super)gravity and cosmological constant
نویسندگان
چکیده
منابع مشابه
Cosmological constant and soft terms in supergravity.
Some of the soft SUSY breaking parameters in hidden sector supergravity model depend on the expectation value of the hidden sector scalar potential, 〈Vh〉, whose tree level value is equal to the tree level cosmological constant. The current practice of calculating soft parameters assumes that 〈Vh〉 = 0. Quantum correction to the cosmological constant can differ from the correction to 〈Vh〉 by an a...
متن کاملThree-dimensional supergravity and the cosmological constant.
Witten has argued that in 2+1 dimensions local supersymmetry can ensure the vanishing of the cosmological constant without requiring the equality of bose and fermi masses. We find that this mechanism is implemented in a novel fashion in the (2+1)-dimensional supersymmetric abelian Higgs model coupled to supergravity. The vortex solitons are annihilated by half of the supersymmetry transformatio...
متن کاملLocalized (Super)Gravity and Cosmological Constant
We consider localization of gravity in domain wall solutions of Einstein’s gravity coupled to a scalar field with a generic potential. We discuss conditions on the scalar potential such that domain wall solutions are non-singular. Such solutions even exist for appropriate potentials which have no minima at all and are unbounded below. Domain walls of this type have infinite tension, while usual...
متن کاملCosmological Constant and Supergravity Soft Terms * Typeset Using Revt E X
In supergravity models, the quantum correction to the vacuum energy can be of order M I , if the cutoff is of order the Planck mass M 2 P and Str M2 6= 0. Therefore, the tree level cosmological constant must be nonzero (probably negative). Since the current practice of calculating soft parameters in supergravity models assumes the vanishing tree level cosmological constant, the supergravity cal...
متن کاملSNUTP 94-19 March, 1994 hep-ph/9404311 Cosmological Constant and Soft Terms in Supergravity
Some of the soft SUSY breaking parameters in hidden sector supergravity model depend on the expectation value of the hidden sector scalar potential, hVhi, whose tree level value is equal to the tree level cosmological constant. The current practice of calculating soft parameters assumes that hVhi = 0. Quantum correction to the cosmological constant can di er from the correction to hVhi by an am...
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: Nuclear Physics B
سال: 2000
ISSN: 0550-3213
DOI: 10.1016/s0550-3213(00)00514-9