Classical string in curved backgrounds

نویسندگان
چکیده

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Generalized Duality in Curved String-Backgrounds

The elements of O(d, d,Z) are shown to be discrete symmetries of the space of curved string backgrounds that are independent of d coordinates. The explicit action of the symmetries on the backgrounds is described. Particular attention is paid to the dilaton transformation. Such symmetries identify different cosmological solutions and other (possibly) singular backgrounds; for example, it is sho...

متن کامل

Exact Supersymmetric String Solutions in Curved Gravitational Backgrounds

We construct a new class of exact and stable superstring solutions based on N = 4 superconformal world-sheet symmetry. In a subclass of these, the full spectrum of string excitations is derived in a modular-invariant way. In the weak curvature limit, our solutions describe a target space with nontrivial metric and topology, and generalize the previously known (semi) wormhole. The effective fiel...

متن کامل

Quantum Field Theory - Quantum String Duality in Curved Backgrounds

We introduce a R “Dual” transform which relates Quantum Field Theory and Quantum String regimes, both in a curved background. This operation maps the characteristic len gth of one regime into the other and, as a consequence, mass domains as well. The Hawking-Gibbons tempe rature and the string maximal or critical temperature are dual of each other. If back reaction of quan tum matter is include...

متن کامل

Exactly solvable string models of curved space-time backgrounds

We consider a new 3-parameter class of exact 4-dimensional solutions in closed string theory and solve the corresponding string model, determining the physical spectrum and the partition function. The background fields (4-metric, antisymmetric tensor, two KaluzaKlein vector fields, dilaton and modulus) generically describe axially symmetric stationary rotating (electro)magnetic flux-tube type u...

متن کامل

Universal aspects of string propagation on curved backgrounds.

String propagation on D–dimensional curved backgrounds with Lorentzian signature is formulated as a geometrical problem of embedding surfaces. When the spatial part of the background corresponds to a general WZW model for a compact group, the classical dynamics of the physical degrees of freedom is governed by the coset conformal field theory SO(D−1)/SO(D−2), which is universal irrespective of ...

متن کامل

ذخیره 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: Physical Review D

سال: 2006

ISSN: 1550-7998,1550-2368

DOI: 10.1103/physrevd.73.124013