97 research outputs found
M2-branes on a resolved
We write down M2-branes on the resolved orbifold space. The
resolved spatial geometry is such that it interpolates between
near the branes and asymptotically. The near horizon geometry of
these branes is a deformation of . An interesting aspect
is that for Chern-Simons theory coupling becomes vanishing near the IR
cutoff leading to spontaneous compactification to type IIA.Comment: 10 pp; v2: references added; v3: minor change after eq(11
Lifshitz to AdS flow with interpolating p-brane solutions
In continuation with our studies of Lifshitz like D-brane solutions, we
propose a class of 1/4 BPS supersymmetric interpolating solutions which
interpolate between IR Lifshitz solutions and UV AdS solutions smoothly. We
demonstrate properties of these classical solutions near the two fixed points.
These interpolating solutions are then used to calculate the entanglement
entropies of strip-like subsystems. With these bulk solutions the entropy
functional also gets modified. We also make a curious observation about the
electric-magnetic duality and the thermal entropy of the Hodge-dual Lifshitz
D brane systems.Comment: 18 pages; v2: minor changes, including a bad typo in the eqs of
Sec-(4.3), references adde
Galilean anti-de-Sitter spacetime in Romans theory
The Romans type IIA theory is the only known example of 10-dimensional
maximal supergravity where (tensor) fields are explicitly massive. We provide
an example of a non-relativistic anti-de Sitter background
as a solution in massive type IIA. A compactification of which on gives
immediately the prototype NRadS background in D=4 which is proposed to be dual
to `cold atoms' or unitary fermions on a wire.Comment: 10 pages; change in reference
D2-D8 system with massive strings and the Lifshitz spacetimes
The Romans type IIA supergravity allows fundamental strings to have explicit
mass term at the tree level. We show that there exists a (F1,D2,D8) brane
configuration which gives rise to vacua
supported by the massive strings. The presence of D8-branes naturally excites
massive fundamental strings. A compactification on circle relates these
Lifshitz massive type-IIA background with the axion-flux vacua in ordinary type-IIB theory. The massive T-duality in
eight dimensions further relates them to yet another
vacua constituted by (F1,D0,D6)
system in ordinary type IIA theory. The latter vacua after compactification to
four dimensions generate two `distinct' electric charges and a constant
magnetic field, all living over 2-dimensional plane. This somewhat reminds us
of a similar set up in quantum Hall systems.Comment: 19 pages; minor change
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