Holography and the Polyakov action

2002 ◽  
Vol 65 (12) ◽  
Author(s):  
M. Bañados ◽  
O. Chandía ◽  
A. Ritz
Keyword(s):  
Polyakov Action

Polyakov Action

2004 ◽  
pp. 303-303
Author(s):  
Euro Spallucci ◽  
Steven Duplij ◽  
Anatoly Nikitin ◽  
Alexander Galkin ◽  
Artur Sergyeyev ◽  
...  
Keyword(s):  
Polyakov Action

Augmented Lagrangian for Polyakov Action Minimization in Color Images

2010 ◽  
Author(s):  
G. Rosman ◽  
X.-C. Tai ◽  
L. Dascal ◽  
R. Kimmel ◽  
Theodore E. Simos ◽  
...  
Keyword(s):  
Augmented Lagrangian ◽  
Color Images ◽  
Polyakov Action

scholarly journals A Polyakov action on Riemann surfaces (II)

1993 ◽  
Vol 152 (2) ◽  
pp. 269-297 ◽  
Author(s):  
Roberto Zucchini
Keyword(s):  
Riemann Surfaces ◽  
Polyakov Action

scholarly journals Ghost-free modification of the Polyakov action and Hawking radiation

2019 ◽  
Vol 100 (10) ◽  
Author(s):  
Jens Boos ◽  
Valeri P. Frolov ◽  
Andrei Zelnikov
Keyword(s):  
Hawking Radiation ◽  
Polyakov Action

A Polyakov action on Riemann surfaces

1991 ◽  
Vol 260 (3-4) ◽  
pp. 296-302 ◽  
Author(s):  
R. Zucchini
Keyword(s):  
Riemann Surfaces ◽  
Polyakov Action

scholarly journals Jacobi sigma models

2021 ◽  
Vol 2021 (3) ◽  
Author(s):  
Francesco Bascone ◽  
Franco Pezzella ◽  
Patrizia Vitale
Keyword(s):  
Sigma Model ◽  
Open String ◽  
Target Space ◽  
Two Dimensional ◽  
Hamiltonian Approach ◽  
Metric Tensor ◽  
Finite Dimensional ◽  
Poisson Sigma Model ◽  
Jacobi Manifold ◽  
Polyakov Action

Abstract We introduce a two-dimensional sigma model associated with a Jacobi manifold. The model is a generalisation of a Poisson sigma model providing a topological open string theory. In the Hamiltonian approach first class constraints are derived, which generate gauge invariance of the model under diffeomorphisms. The reduced phase space is finite-dimensional. By introducing a metric tensor on the target, a non-topological sigma model is obtained, yielding a Polyakov action with metric and B-field, whose target space is a Jacobi manifold.

scholarly journals Torsional Newton Cartan gravity from non-relativistic strings

2020 ◽  
Vol 2020 (9) ◽  
Author(s):  
A.D. Gallegos ◽  
U. Gürsoy ◽  
N. Zinnato
Keyword(s):  
Beta Function ◽  
Mass Term ◽  
Critical Dimension ◽  
Important Ingredient ◽  
Null Direction ◽  
Weyl Invariance ◽  
Newton's Law ◽  
Advection Term ◽  
Newton’S Law ◽  
Polyakov Action

Abstract We study propagation of closed bosonic strings in torsional Newton-Cartan geometry based on a recently proposed Polyakov type action derived by dimensional reduction of the ordinary bosonic string along a null direction. We generalize the Polyakov action proposal to include matter, i.e. the 2-form and the 1-form that originates from the Kalb- Ramond field and the dilaton. We determine the conditions for Weyl invariance which we express as the beta-function equations on the worldsheet, in analogy with the usual case of strings propagating on a pseudo-Riemannian manifold. The critical dimension of the TNC space-time turns out to be 25. We find that Newton’s law of gravitation follows from the requirement of quantum Weyl invariance in the absence of torsion. Presence of the 1-form requires torsion to be non vanishing. Torsion has interesting consequences, in particular it yields a mass term and an advection term in the generalized Newton’s law. U(1) mass invariance of the theory is an important ingredient in deriving the beta functions.

scholarly journals Derivation of the Polyakov action

2000 ◽  
Vol 490 (3-4) ◽  
pp. 242-246 ◽  
Author(s):  
M. Kachkachi
Keyword(s):  
Polyakov Action
Sign in / Sign up

Export Citation Format

Share Document