منابع مشابه
New aspects of the BMN correspondence beyond the planar limit
Motivated by recent disagreements in the context of AdS/CFT, we study the non-planar sector of the BMN correspondence. In particular, we reconsider the energy shift of states with two stringy excitations in light-cone string field theory and explicitly determine its complete perturbative contribution from the impurity-conserving channel. Surprisingly, our result neither agrees with earlier lead...
متن کاملBeyond the Child-Langmuir limit.
This article presents a new formulation of the solution for fully nonlinear and unsteady planar flow of an electron beam in a diode. Using characteristic variables (i.e., variables that follow particle paths) the solution is expressed through an exact analytic, but implicit, formula for any choice of incoming velocity v(0), electric field E(0), and current J(0). For steady solutions, this appro...
متن کاملComputation beyond the turing limit.
Extensive efforts have been made to prove the Church-Turing thesis, which suggests that all realizable dynamical and physical systems cannot be more powerful than classical models of computation. A simply described but highly chaotic dynamical system called the analog shift map is presented here, which has computational power beyond the Turing limit (super-Turing); it computes exactly like neur...
متن کاملHolography beyond the Penrose limit
The flat pp-wave background geometry has been realized as a particular Penrose limit of AdS5 × S. It describes a string that has been infinitely boosted along an equatorial null geodesic in the S subspace. The string worldsheet Hamiltonian in this background is free. Finite boosts lead to curvature corrections that induce interacting perturbations of the string worldsheet Hamiltonian. We develo...
متن کاملOptics beyond the diffraction limit
In this lecture, we introduce the basic concepts of near-field optics using two different points of view: the plane-wave angular spectrum and the electric-dipole radiation. The first approach leads naturally to the diffraction limit and to the concepts of evanescent waves and near field. The second approach shows that the basic laws of electromagnetic radiation also lead to the classical resolu...
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: Journal of High Energy Physics
سال: 2012
ISSN: 1029-8479
DOI: 10.1007/jhep05(2012)037