AdS 2 D - Branes in Lorentzian AdS 3

نویسنده

  • Cemsinan Deliduman
چکیده

The boundary states for AdS 2 D-branes in Lorentzian AdS 3 space-time are presented. AdS 2 D-branes are algebraically defined by twisted Dirichlet boundary conditions and are located on twisted conjugacy classes of SL(2,R). Using free field representation of symmetry currents in the SL(2,R) WZNW model, the twisted Dirichlet gluing conditions among currents are translated to matching conditions among free fields and then to boundary conditions among the modes of free fields. The Ishibashi states are written as coherent states on AdS 3 in the free field formalism and it is shown that twisted Dirichlet boundary conditions are satisfied on them. The tree-level amplitude of propagation of closed strings between two AdS 2 D-branes is evaluated and by comparing which to the characters of sl(2,R) Kac-Moody algebra it is shown that only states in the principal continuous series representation of sl(2,R) Kac-Moody algebra contributes to the amplitude and thus they are the only ones that couple to AdS 2 D-branes. The form of the character of sl(2,R) principal continuous series and the boundary condition among the zero modes are used to determine the physical boundary states for AdS 2 D-branes.

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

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

hep-th/0211288 AdS2 D-Branes in Lorentzian AdS3

The boundary states for AdS 2 D-branes in Lorentzian AdS 3 space-time are presented. AdS 2 D-branes are algebraically defined by twisted Dirichlet boundary conditions and are located on twisted conjugacy classes of SL(2,R). Using free field representation of symmetry currents in the SL(2,R) WZNW model, the twisted Dirichlet gluing conditions among currents are translated to matching conditions ...

متن کامل

Anti-de Sitter D-branes in Curved Backgrounds

We investigate the properties of the AdS D1-branes which are the bound states of a curved D1-brane with n fundamental strings (F1) in the AdS3 spacetime, and the AdS D2-branes which are the axially symmetric bound states of a curved D2-brane with m D0-branes and n fundamental strings in the AdS3 × S spacetime. We see that, while the AdS D1-branes asymptotically approach to the event horizon of ...

متن کامل

Tasi Lectures on Branes , Black Holes and Anti - De Sitter Space

In the light of the duality between physics in the bulk of anti-de Sitter space and a conformal field theory on the boundary, we review the M 2, D3 and M 5 branes and how their near-horizon geometry yields the compactification of D = 11 supergravity on S 7 , Type IIB supergravity on S 5 and D = 11 supergravity on S 4 , respectively. We discuss the " Membrane at the End of the Universe " idea an...

متن کامل

Remarks on Anti - De Sitter D - Branes

We present some preliminary investigations about the AdS 2 ×S 2 D3-branes in AdS 3 ×S 3. We analyse the quadratic fluctuations of Dirac–Born–Infeld action around a given semi-classical D-brane configuration and compare them with results obtained by using conformal-field-theory techniques. We finally study classical motions of open strings attached to those D-branes and analyse the rôle of the s...

متن کامل

Non-Relativistic AdS Branes and Newton-Hooke Superalgebra

We examine a non-relativistic limit of D-branes in AdS5×S and M-branes in AdS4/7×S. First, Newton-Hooke superalgebras for the AdS branes are derived from AdS×S superalgebras as Inönü-Wigner contractions. It is shown that the directions along which the AdS-brane worldvolume extends are restricted by requiring that the isometry on the AdS-brane worldvolume and the Lorentz symmetry in the transver...

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

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

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2003