arXiv subjects

Pei Wang

Publications and source records attributed to Pei Wang.

313 records · Page 18Linked to original sources

arXiv2005

Correlations of spin-polarized and entangled electrons with Berry phase

The correlation and fluctuation of both entangled electrons and spin-polarized pairs affected by two rotating magnetic fields in a setup proposed by J. Carlos Egues etc. (Phys. Rev. Lett. {\bf 89}(2002) 176401) are studied theoretically by using scattering approach. Differing from polarized pair, the entangled electron pairs are shown to behave like a composite particle with the total spins and its $z$ components. The singlet and triplet states exhibit different bunching and antibunching features, which can be easily adjusted by the magnetic fields. The correlations and variances can show up distinguish output signals for the four incident states. Our results are expected to be tested by using coincident technique.

cond-mat.mes-hall↗

arXiv2003

Nucleation of p-branes with form fields and dielectric brane

In this paper we discuss how to generalize the concept of nucleation to the p-branes with form fields. And we try to get ready for calculating the decay width of the dielectric brane.

hep-th↗

arXiv2000

Morita Equivalence and Interpolation of The Dirac-Born-infeld Theory on the Non-Commutative Torus

In the noncommutative Dirac-Born-Infeld action with Chern-Simons term, an interpolation field $Φ$ is used in both DBI action and Chern-Simons term. The Morita equivalence is discussed in both the lagrangian and the Hamiltonian formalisms, which is more transparent in this treatment.

hep-th↗

arXiv2000

W-symmetries on the Homogeneous Space G/U(1)^r

A construction of $W$-symmetries is given only in terms of the nonlocal fields (parafermions ${\ps}_{\al}$), which take values on the homogeneous space $G/U(1)^r$, where $G$ is a simply connected compact Lie group manifold (its accompanying Lie algebra ${\cal G}$ is a simple one of rank $r$). Only certain restriction of the root set of Lie algebra on which the parafermionic fields take values are satisfied, then a consistent and non-trivial extension of the stress momentum tensor may exist. For arbitrary simple-laced algebras, i.e. the $A-D-E$ cases, a more detailed discussion is given. The OPE of spin three primary field are calculated, in which a primary field with spin four is emerging.

hep-th↗

arXiv1999

Rotation of D-brane and Non-commutative Geometry

Our motivation is to find the relationship between the commutator of coordinates and uncertainty relation involving only the coordinates. The boundary condition with constant background field is connected with the rotation of D-brane at general angle. And the mode expansions of D-brane we found is more reasonable than those appeared in literature. The partition functions and scattering amplitudes are also discussed.

hep-th↗

arXiv1997

Nonelectromagnetic duality in twisted N=4 model

In this paper we discuss the possible existing correlation functions in the N=4 topological model. Due to the distinguished feature that no anomaly exists in N=4 supersymmetric theories, the positive-negative ghost number balance has to be taken into account while considering the correlation functions. On restriction to Kahler manifolds we may find a perturbative mass term which breaks the N=4 supersymmetry down to N=1. In all of these, a nonelectromagnetic duality plays an important role. Moreover, to get a computable generating functional the existence of a proper vanishing theorem is required.

hep-th↗

arXiv1995

A Suggestion for Modification of Vafa-Witten Theory

Using the Mathai-Quillen formalism we reexamine the twisted N=4 supersymmetric model of Vafa-Witten theory. Smooth out the relation between the supersymmetric action and the path integral representation of the Thom class.

hep-th↗