D-branes and physical states
نویسندگان
چکیده
منابع مشابه
D-Branes and Physical States
States obtained by projecting boundary states, associated with D-branes, to fixed mass-level and momentum generically define non-trivial cohomology classes. For on-shell states the cohomology is the standard one, but when the states are off-shell the relevant cohomology is defined using a BRST operator with ghost zero modes removed. The zero momentum cohomology falls naturally into multiplets o...
متن کاملBoundary States for D-branes in AdS3
We construct boundary states representing D-strings in AdS3. These wrap twisted conjugacy classes of SL(2, IR), and the boundary states are therefore based on continuous representations only. We check Cardy’s condition and find a consistent open string spectrum. The open string spectrum on all the D-branes is the same.
متن کاملp–BRANES, D–BRANES AND M–BRANES
We consider solutions to the string effective action corresponding to p–Branes, D–Branes and M –Branes and discuss some of their properties.
متن کاملMore on Mixed Boundary Conditions and D-branes Bound States
In this article, applying different types of boundary conditions; Dirichlet, Neumann, or Mixed, on open strings we realize various new brane bound states in string theory. Calculating their interactions with other D-branes, we find their charge densities and their tension. A novel feature of (p− 2, p) brane bound state is its ”non-commutative” nature which is manifestly seen both in the open st...
متن کاملGas of D-Branes and Hagedorn Density of BPS States
We test the prediction of a hagedorn density of BPS states which carry RR charge in type II compactifications. We find that in certain cases they correspond to the supersym-metric ground states for a gas of identical 0-branes.
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: 1997
ISSN: 0550-3213
DOI: 10.1016/s0550-3213(96)00475-0