Twisted World-Sheet Gravities
نویسنده
چکیده
This is the first in a series of papers in which I investigate the orbifolds of permutation-type as candidates for new physical string systems at multiples of critical closed-string central charges. Examples include the bosonic orientation orbifolds, the bosonic permutation orbifolds and others, as well as superstring extensions. In this paper I use the extended (twisted) Virasoro algebras of these orbifolds to construct the corresponding extended action formulations of the twisted openand closed-string sectors of all the bosonic orbifolds at ĉ = 26K. The extended actions exhibit a large set of new twisted world-sheet gravities, whose extended diffeomorphism groups clearly indicate that the associated operator-string theories can be free of negative-norm states at higher central charge. ∗[email protected] 1
منابع مشابه
The Orbifolds of Permutation-type as Physical String Systems at Multiples of C = 26 Ii. the Twisted Brst Systems Ofˆc = 52 Matter
This is the second in a series of papers which consider the orbifolds of permutation-type as candidates for new physical string systems at higher central charge. In the first paper, I worked out the extended actions of the twisted sectors of those orbifolds – which exhibit new permutation-twisted world-sheet gravities and correspondingly extended diffeomorphism groups. In this paper I begin the...
متن کاملTopological String on AdS 3 ×N
We study the topologically twisted string theory on the general back-ground AdS3× N which is compatible with the world-sheet N = 2 superconformal symmetry and is extensively discussed in the recent works [20]. After summarizing the algebraic structure of the world-sheet topological theory, we show that the space-time (boundary) conformal theory should be also topological. We directly construct ...
متن کاملTwisted Open Strings from Closed Strings: The WZW Orientation Orbifolds
Including world-sheet orientation-reversing automorphisms ĥσ ∈ H− in the orbifold program, we construct the operator algebras and twisted KZ systems of the general WZW orientation orbifold Ag(H−)/H−. We find that the orientation-orbifold sectors corresponding to each ĥσ ∈ H− are twisted open WZW strings, whose properties are quite distinct from conventional open-string orientifold sectors. As s...
متن کاملTree scattering amplitudes of the spin-4/3 fractional superstring. II. The twisted sectors.
The spin-4/3 fractional superstring is characterized by a world-sheet chiral algebra involving spin-4/3 currents. The discussion of the tree-level scattering amplitudes of this theory presented in Ref. [1] is expanded to include amplitudes containing two twisted-sector states. These amplitudes are shown to satisfy spurious state decoupling. The restriction to only two external twisted-sector st...
متن کاملThe Operator Algebra and Twisted KZ Equations of WZW Orbifolds
We obtain the operator algebra of each twisted sector of all WZW orbifolds, including the general twisted current algebra and the algebra of the twisted currents with the twisted affine primary fields. Surprisingly, the twisted right and left mover current algebras are not a priori copies of each other. Using the operator algebra we also derive world-sheet differential equations for the twisted...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2008