Double field theory describes a massless subsector of closed string theory with both momentum and winding excitations. The gauge algebra is governed by the Courant bracket in certain subsectors of this double field theory. We construct the associated nonlinear backgroundindependent action that is T-duality invariant and realizes the Courant gauge algebra. The action is the sum of a standard act...

We study the mechanism by which gravitational actions reproduce the trace anomalies of the holographically related conformal field theories. Two universal features emerge: a) the ratios of type B trace anomalies in any even dimension are independent of the gravitational action being uniquely determined by the underlying algebraic structure b) the normalization of the type A and the overall norm...

Tujuan penelitian ini adalah mendeskripsikan tingkat kecemasan matematika, faktor-faktor yang menyebabkan, dan solusi untuk mengatasi matematika siswa SMP dalam menyelesaikan soal bangun ruang ditinjau dari gaya kognitif field dependent independent. Jenis yaitu kualitatif. Subjek Negeri 2 Besuki metode pengumpulan data digunakan berupa angket, tes, wawancara dimana menguji kredibilitas triangul...

The ground-state structure of the two-dimensional random field Ising magnet is studied using exact numerical calculations. First we show that the ferromagnetism, which exists for small system sizes, vanishes with a large excitation at a random field strength-dependent length scale. This breakup length scale L(b) scales exponentially with the squared random field, exp(A/delta(2)). By adding an e...

3 BF SYSTEM, a field-theory system consisting of the two fields B and F. On the D-dimensional manifold M D (D ≥ 2), the classical action of the (pure) BF system is defined by the metric-independent expression M D Tr(B D−2 ∧ F A), (1) where B D−2 is a Lie algebra-valued differential D − 2-form, and F A is the curvature of the connection form A, F A = dA + 1 2 [A, A]. BF system constitutes an imp...

We present an analytic computation of the two-loop QCD corrections to $u\bar{d}\to W^+b\bar{b}$ for on-shell $W$-boson using leading colour and massless bottom quark approximations. perform integration-by-parts reduction unpolarised squared matrix element finite field reconstruction techniques identify independent basis special functions that allows subtraction infrared ultraviolet poles. This ...

This study examined the legibility of information presented on head-up displays (HUDs) for automotive application as a function of background scene complexity, the position of the HUD within field of view relative to the background scene, and the perceptual capacity of the perceiver. Groups of field-dependent and field-independent subjects viewed video footage from the perspective of following ...

Variational principles for magnetohydrodynamics were introduced by previous authors both in Lagrangian and Eulerian form. In a previous work Yahalom & Lynden-Bell introduced a simpler Eulerian variational principles from which all the relevant equations of magnetohydrodynamics can be derived. The variational principle was given in terms of six independent functions for non-stationary flows and ...