Axially symmetric spacetimes play an important role in the relativistic description of rotating astrophysical objects like black holes, stars, etc. In gravitational theories that venture beyond usual Riemannian geometry by allowing independent connection components, notion symmetry concerns, not just metric, but also connection. As discovered recently, teleparallel geometries, axial can be real...

Characterized by microwave spectroscopy after their formation in a supersonic jet, the axial and equatorial hydrogen bond conformers of the title complex were studied. The axial form--shown in the picture--has been found to be the most stable one. The experimental data are consistent with a C(s) symmetry for both conformers, in which linear hydrogen bonds lying in the symmetry plane bisect the ...

Zs. Podolyák, S. Al-Garni, R.F. Casten, J.R Cooper,* D.M. Cullen, A. Dewald, R. Krücken, H. Newman, J.N. Orce, C.J. Pearson, C. Ur, R. Venturelli, S. Vincent, C. Wheldon, P.M. Walker, F.R. Xu, A. Yamamoto, and N.V. Zamfir Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom A.W. Wright Nuclear Structure Laboratory, Department of Physics, Yale University, New Haven, Con...

A general expression of the axial-vector current is presented, in which both the effects of the chiral symmetry breaking and the spontaneous chiral symmetry breaking are included. A new resonance formula of the axial-vector meson is derived and in the limit of q → 0 this formula doesn’t go back to the “chiral limit“. The studies show that the dominance of the axial-vector meson is associated wi...

We study the equilibrium shapes of a lipid membrane, attached to a fixed circular substrate. We show how the weakening of the boundary conditions is able to break the axial symmetry of the optimal equilibrium configuration. We derive the critical threshold of the symmetry-breaking transition, and obtain the analytical expression of the free-energy minimizers in the quasi-planar approximation. M...

Chiral symmetry restoration in a dense medium is to some extent a consequence of the nuclear pion cloud. These pions induce a mixing of the axial and vector current contributions in the axial and vector cor-relators. We discuss their influence on hadron masses and investigate the signal produced by the remaining contribution associated with chi-ral symmetry restoration. Using the quark-meson co...

If the dual Meissner effect due to abelian monopole condensation is the quark confinement mechanism of QCD as suggested in recent Monte-Carlo simulations of lattice QCD, new axial-vector and scalar bosons with the mass of O(1GeV) would appear as physical states which are different from ordinary hadrons and glueballs. The axial-vector boson can not decay into ordinary color-singlet hadrons and g...

The domain wall fermion (DWF) method, with its almost perfectly preserved chiral symmetry on the lattice, makes the calculation of the nucleon axial charge particularly easy. By maintaining chiral symmetry and using the Ward-Takahashi (WT) identity, one has ZA = ZV and the bare lattice calculation yields the physical value without explicit renormalization. The DBW2 improved gauge action provide...

Lines generated by marginal deformations of WZW models are considered. The Weyl symmetry at the WZW point implies the existence of a duality symmetry on such lines. The duality is interpreted as a broken gauge symmetry in string theory. It is shown that at the two end points the axial and vector cosets are obtained. This shows that the axial and vector cosets are equivalent CFTs both in the com...

Spontaneous chiral symmetry breaking and its restoration in a QCD medium is one of the most interesting aspects of non-perturbative QCD [1]. One clear sign that chiral symmetry is broken in the QCD vacuum comes from a comparison of the spectra of two quark currents related by a chiral transformation, namely the isovector–vector and isovector–axial-vector current. If the vacuum obeyed chiral sym...