Browsing Physics and Astronomy by Issue Date
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Contactless electroreflectance study of interdiffusion in heattreated GaAs1xSbx/GaAs single quantum wells
(19981102)We have studied the interdiffusion process on the group V sublattice in thermally annealed, undoped strained single quantum wells by comparing the results of contactless electroreflectance spectroscopy with theoretically ... 
Largesmall dualities between periodic collapsing/expanding branes and brane funnels
(Elsevier, 200510)We consider space and time dependent fuzzy spheres arising in intersections in IIB string theory and collapsing branes in IIA string theory. In the case of , where the periodic space and timedependent solutions can be ... 
Noncommutative geometry, quantum effects and DBIscaling in the collapse of D0D2 bound states
(IOP Publishing, 200601)We study fluctuations of timedependent fuzzy twosphere solutions of the nonabelian DBI action of D0branes, describing a bound state of a spherical D2brane with N D0branes. The quadratic action for small fluctuations ... 
On timedependent collapsing branes and fuzzy odddimensional spheres
(World Scientific Publishing Co Pte Ltd, 200605)We study the timedependent dynamics of a collection of N collapsing/expanding D0branes in type IIA string theory. We show that the fuzzyS3 and S5 provide timedependent solutions to the matrix model of D0branes and its ... 
Big bang and big crunch in matrix string theory
(American Physical Society, 200702)Following the holographic description of linear dilaton null cosmologies with a big bang in terms of matrix string theory put forward by Craps, Sethi, and Verlinde, we propose an extended background describing a universe ... 
Twistor strings with flavour
(IOP Publishing, 200711)We explore the treelevel description of a class of Script N = 2 UVfinite SYM theories with fundamental flavour within a topological Bmodel twistor string framework. In particular, we identify the twistor dual of the ... 
Proceedings of SuperB Workshop VI: New Physics at the Super Flavor Factory
(2008)The sixth SuperB Workshop was convened in response to questions posed by the INFN Review Committee, evaluating the SuperB project at the request of INFN. The working groups addressed the capability of a highluminosity ... 
D2 to D2
(2008)Starting from maximally supersymmetric (2+1)d YangMills theory and using a duality transformation due to de Wit, Nicolai and Samtleben, we obtain the ghostfree Lorentzian 3algebra theory that has recently been proposed ... 
M2 to D2
(IOP Publishing, 2008)We examine the recently proposed ``3algebra'' field theory for multiple M2branes and show that when a scalar field valued in the 3algebra develops a vacuum expectation value, the resulting Higgs mechanism has the novel ... 
M2branes on Mfolds
(2008)We argue that the moduli space for the BaggerLambert A_4 theory at level k is (R^8 \times R^8)/D_{2k}, where D_{2k} is the dihedral group of order 4k. We conjecture that the theory describes two M2branes on a Z_{2k} ... 
The Power of the Higgs Mechanism: HigherDerivative BLG Theories
(IOP Publishing, 2009)We use the novel Higgs mechanism of arXiv:0803.3218 to determine the leading higherderivative corrections to the Euclidean N = 8 BaggerLambertGustavsson field theory. The result matches that previously found for Lorentzian ... 
Fuzzy Killing Spinors and Supersymmetric D4 action on the Fuzzy 2sphere from the ABJM Model
(IOP Publishing, 2009)Our recent construction arXiv:0903.3966 for the fuzzy 2sphere in terms of bifundamentals, discovered in the context of the ABJM model, is shown to be explicitly equivalent to the usual (adjoint) fuzzy sphere construction. ... 
First Measurement of $ν_μ$ and $ν_e$ Events in an OffAxis HornFocused Neutrino Beam
(American Physical Society, 200905)We report the first observation of offaxis neutrino interactions in the MiniBooNE detector from the NuMI beamline at Fermilab. The MiniBooNE detector is located 745 m from the NuMI production target, at 110 mrad angle ... 
The fuzzy S2 structure of M2M5 systems in ABJM membrane theories
(IOP Publishing, 200905)We analyse the fluctuations of the groundstate/funnel solutions proposed to describe M2M5 systems in the levelk massdeformed/pure ChernSimonsmatter ABJM theory of multiple membranes. We show that in the large N limit ... 
Supersymmetric Wilson Loops in Diverse Dimensions
(20090605) 
Bifundamental Fuzzy 2Sphere and Fuzzy Killing Spinors
(SIGMA, 2010)We review our construction of a bifundamental version of the fuzzy 2sphere and its relation to fuzzy Killing spinors, first obtained in the context of the ABJM membrane model. This is shown to be completely equivalent to ... 
Relating U(N)xU(N) to SU(N)xSU(N) ChernSimons Membrane theories
(Springer, 201004)By integrating out the U(1)_B gauge field, we show that the U(n)xU(n) ABJM theory at level k is equivalent to a Z_k identification of the (SU(n)xSU(n))/Z_n ChernSimons theory, but only when n and k are coprime. As a ... 
Nonabelian (2,0) Tensor Multiplets and 3algebras
(Springer, 201008)Using 3algebras we obtain a nonabelian system of equations that furnish a representation of the (2,0)supersymmetric tensor multiplet. The onshell conditions are quite restrictive so that the system can be reduced to ...