The second alternative conformal limit of the recently proposed general higher derivative dilaton quantum theory in curved spacetime is explored. In this version of the theory the dilaton is transformed, along with the metric, to provide the conformal invariance of the classical action. We find the corresponding quantum theory to be renormalizable at one loop, and the renormalization constants ...

The gauging of isometries in general sigma-models which include fermionic terms which represent the interaction of strings with background Yang-Mills fields is considered. Gauging is possible only if certain obstructions are absent. The quantum gauge anomaly is discussed, and the (1,0) supersymmetric generalisation of the gauged action given. Non-linear sigma-models are important two-dimensiona...

The use of nitrogen mustards as chemotherapeutic agents in the treatment of certain neoplastic diseases has been well established by a large number of workers (Montgomery, 1959; Creech, Breuninger, Hankwitz, Polsky & Wilson, 1960; Ross, 1962). A large number of different compounds have been screened in various test systems in vitro and in vivo for anticancerous, antibacterial, antimicrobial and...

The bosonic parts of D3-brane actions in AdS(5) backgrounds are known to have symmetries which are field-dependent extensions of conformal transformations of the worldvolume coordinates. We use the method of nonlinear realizations to construct a four-dimensional N = 1 off-shell supersymmetric action which has a generalized superconformal invariance. The Goldstone fields for broken scale, chiral...

The 3-d Z(2) lattice gauge-Higgs theory is cast in a partial axial gauge leaving a residual Z(2) symmetry, global in two directions and local in one. It is shown both analytically and numerically that this symmetry breaks spontaneously in the Higgs phase and is unbroken in the confinement phase. Therefore they must be separated everywhere by a phase transition, in contradiction to a theorem by ...

It is my honor and pleasure to speak at this conference in memory of Andrei Sakharov on the occasion of his 75th birthday. Even though I never met with Sakharov personally, I understand from my good friend Professor Fradkin that Sakharov expressed considerable interest in superstring theory during his exile in Gorky. I would have enjoyed discussing the subject with him, but after his return to ...

The quantum BRST charges for Bershadsky-Knizhnik orthogonal quasisuperconformal algebras are constructed. These two-dimensional superalgebras have the N -extended non-linearly realised supersymmetry and the SO(N) internal symmetry. The BRST charge nilpotency conditions are shown to have a unique solution at N > 2, namely, N = 4 and k = −2, where k is central extension parameter of the Kač-Moody...

We study the manifestly covariant three-dimensional symmetric ChernSimons action in terms of the Batalin-Vilkovisky quantization method. We find that the Lorentz covariant gauge fixed version of this action is reduced to the usual Chern-Simons type action after a proper field redefinition. Furthermore, the renormalizability of the symmetric Chern-Simons theory turns out to be the same as that o...

Complementarity the absence of a phase boundary separating the Higgs and confinement phases of a gauge theory can be violated by the addition of chiral fermions. We utilize chiral symmetry violating fermion correlators such as 〈ψ̄ψ〉 as order parameters to investigate this issue. Using inequalities similar to those of Vafa-Witten and Weingarten, we show that SU(2) gauge theories with Higgs and fe...