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2.
《Nuclear Physics B》1999,551(3):770-812
We propose explicit recipes to construct the Euclidean Green functions of gauge-invariant charged, monopole and dyon fields in four-dimensional gauge theories whose phase diagram contains phases with deconfined electric and/or magnetic charges. In theories with only either abelian electric or magnetic charges, our construction is an Euclidean version of Dirac's original proposal, the magnetic dual of his proposal, respectively. Rigorous mathematical control is achieved for a class of abelian lattice theories. In theories where electric and magnetic charges coexist, our construction of Green functions of electrically or magnetically charged fields involves taking an average over Mandelstam strings or the dual magnetic flux tubes, in accordance with Dirac's flux quantization condition. We apply our construction to 't Hooft-Polyakov monopoles and Julia-Zee dyons. Connections between our construction and the semiclassical approach are discussed. 相似文献
3.
C. Panagiotakopoulos 《Nuclear Physics B》1983,212(1):118-130
A renormalized quantum electromagnetodynamics (QEMD) of a dyon field is defined. Finite and n-independent answers can be obtained in each order of the loop expansion for all processes. The electric and magnetic charges are not constrained with the Dirac condition and therefore perturbation theory can be made reliable. The renormalized theory is found to possess exact dual invariance. Comparisons with the general QEMD of electric and magnetic charges are made. 相似文献
4.
B. C. Chanyal P. S. Bisht O. P. S. Negi 《International Journal of Theoretical Physics》2011,50(6):1919-1926
Starting with the usual definitions of octonions and split octonions in terms of Zorn vector matrix realization, we have made
an attempt to write the consistent form of generalized Maxwell’s equations in presence of electric and magnetic charges (dyons).
We have thus written the generalized potential, generalized field, and generalized current of dyons in terms of split octonions
and accordingly the split octonion forms of generalized Dirac Maxwell’s equations are obtained in compact and consistent manner.
This theory reproduces the dynamic of electric (magnetic) in the absence of magnetic (electric) charges. 相似文献
5.
Dirac, Schwinger and Zwanziger theories of electric and magnetic charges are obtained via duality transformation. Analogous construction for three Euclidean dimensions, with magnetic charges interacting with electric currents, is also done. The role of Dirac strings as dislocations in the configurations of gauge potential is emphasized. 相似文献
6.
We investigate the charges and fluxes that can occur in higher-order Abelian gauge theories defined on compact space-time manifolds with boundary. The boundary is necessary to supply a destination to the electric lines of force emanating from brane sources, thus allowing non-zero net electric charges, but it also introduces new types of electric and magnetic flux. The resulting structure of currents, charges, and fluxes is studied and expressed in the language of relative homology and de Rham cohomology and the corresponding abelian groups. These can be organised in terms of a pair of exact sequences related by the Poincaré-Lefschetz isomorphism and by a weaker flip symmetry exchanging the ends of the sequences. It is shown how all this structure is brought into play by the imposition of the appropriately generalised Maxwell’s equations. The requirement that these equations be integrable restricts the world-volume of a permitted brane (assumed closed) to be homologous to a cycle on the boundary of space-time. All electric charges and magnetic fluxes are quantised and satisfy the Dirac quantisation condition. But through some boundary cycles there may be unquantised electric fluxes associated with quantised magnetic fluxes and so dyonic in nature. 相似文献
7.
A New Strategy of Chaos Control and A Unified Mechanism for Several Kinds of Chaos Control Methods 总被引:3,自引:0,他引:3
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A method of obtaining
electromagnetic field tensor for the source of the field possessing both electric and
magnetic charges is given. As an example, in Kerr-Newman space-time with a large number of
magnetic charges the method is used, and the results are the same as those obtained by
making electric charge a complex extension directly to e+iq. 相似文献
8.
提出了一种求解双荷场源电磁场张量的方法.作为实例,讨论了含磁荷情况下Kerr-Newman时空中的电磁场张量,所得结果与直接进行复延拓ee+iq所得相同.
关键词: 相似文献
9.
Nikolaos Kourkoumelis 《Contemporary Physics》2013,54(2):134-135
By considering simple examples from the viewpoint of both classical electromagnetism and the special theory of relativity, it is shown that the magnetic forces between moving charges are of order v 2/c 2 times the electric forces between the charges, where v is the velocity of the charges. The relevance of electric forces in the definition of the ampere is discussed. 相似文献
10.
In the gravitational field of central mass with electric and
magnetic charges and magnetic moment (CM space-time), this paper
calculates the interference phase of mass neutrino along geodesic in
the radial direction, and discusses the contribution of the electric
and magnetic charges and magnetic moment of the central mass to the
phase. 相似文献
11.
We extended the Parikh-Wilczek’s method to calculate the tunneling radiation of charged and magnetized particles from the
event horizon and the cosmological horizon of the Reissner-Nordstr?m-de Sitter black hole with magnetic charges. We reconstructed
the electromagnetic field tensor and recalculated the Lagrangian of the field corresponding to the source with electric and
magnetic charges. By viewing the eclectic and magnetic charges as an equivalent electric charge, we obtained the tunneling
rate of the charged and magnetized particles. Our calculation supports the conclusion given by Parikh and Wilczek that the
emission spectrum is no longer purely thermal, and the emission process supports the information conservation. 相似文献
12.
《Journal of Electrostatics》2014,72(5):387-395
In this work, analysis of the human body exposed to high voltage electric and magnetic fields is presented. The distribution of the electric field is obtained by using Laplace's equation. This relates the surface charge induced on the body to the potential in a reciprocal Laplace problem, which is then calculated by charge simulation method coupled with genetic algorithms to determine the appropriate arrangement of simulating charges inside the human body. The magnetic field intensity along the vertical center line of the human is calculated. Exposure to external electric and magnetic fields at power frequency induces electric field, magnetic field and currents inside the human body. The presented model for simulating electric and magnetic fields are a three dimensional field problem and introduced different types of charges to simulate the different elementary geometrical shapes of human body. The particular strength of the charge simulation method in this application is its ability to allow a detailed representation of the shape and posture of the human body. The results have been assessed through comparison induced current, electric field, magnetic field and there distribution over the body surface, as estimated in other experimental and computational work. 相似文献
13.
The Kerner-Mann fermions tunneling framework is extended to the spin particles with electric and magnetic charges in this
paper. We rewrite the electromagnetic field tensor and the Lagrangian of the field corresponding to the source with electric
and magnetic charges to redefine an equivalent charge. We only consider the case that the ratio of the electric charge and
magnetic charge of the emission is constant and equal to the source. The result shows that when the energy conservation together
with the electric charge and magnetic charge conservations are taken into account in the dynamical background space time,
the emission rate agrees with the underlying unitary theory and the actual radiation spectrum of charged and magnetized fermions
also derivates from the pure thermal one. 相似文献
14.
Standstill Electric Charge Generates Magnetostatic Field under Born-Infeld Electrodynamics 总被引:1,自引:1,他引:0
S. O. Vellozo J. A. Helayël Neto A. W. Smith L. P. G. De Assis 《International Journal of Theoretical Physics》2008,47(11):2934-2944
The Abelian Born-Infeld classical non-linear Electrodynamic has been used to investigate the electric and magnetostatic fields
generated by a point-like electric charge at rest in an inertial frame. The results show a rich internal structure for the
charge. Analytical solutions have also been found. Such fields configurations have been interpreted in terms of vacuum polarization
and magnetic-like charges produced by the very high strengths of the electric field considered. Apparently non-linearity is
responsible for the emergence of an anomalous magnetostatic field suggesting a possible connection to that created by a magnetic
dipole composed of two magnetic charges with opposite signs. Consistently in situations where the Born-Infeld field strength
parameter is free to become infinite, Maxwell’s regime takes over, the magnetic sector vanishes and the electric field assumes
a Coulomb behavior with no trace of a magnetic component. The connection to other monopole solutions, like Dirac’s and ’tHooft’s
Poliakov’s types are also discussed. Finally, some speculative remarks are presented in an attempt to explain such fields. 相似文献
15.
A.O. Barut 《Physics letters. [Part B]》1976,63(1):73-74
The large spatial size of magnetic charges (or dyons) and parity considerations are used to show that in models of the proton based on dyons the hyperfine splitting must be due to the magnetic moment produced by the electric charge. The contributions of the magnetic monopoles cancel, otherwise the proton would have a large electric dipole moment. 相似文献
16.
Xiao-Xiong Zeng Xiong-Wei Liu Shu-Zheng Yang 《General Relativity and Gravitation》2008,40(12):2533-2542
Hawking radiation of particles with electric and magnetic charges from the Einstein–Maxwell-Dilaton–Axion black hole is derived
via the anomaly cancellation method, initiated by Robinson and Wilczek and elaborated by Banerjee and Kulkarni recently. We
reconstruct the electromagnetic field tensor to redefine the gauge potential and equivalent charge corresponding to the source
with electric and magnetic charges. We only adopt the covariant gauge and gravitational anomalies to discuss the near-horizon
quantum anomaly in the dragging coordinate frame. Our result shows that Hawking radiation in this case also can be reproduced
from the viewpoint of anomaly. 相似文献
17.
We analyze some features of the electrodynamics of dual charges and we derive an expression for the self-torque in a simple
model of extended dual charge, taking into account, consistently, the retarded condition we compare our results with those
obtained for electric or magnetic charges only. The behaviour of a dual charge distribution is radically different from the
behaviour of a purely electric or magnetic one. 相似文献
18.
Vinod Singh Buddhi Vallabh Tripathi 《International Journal of Theoretical Physics》2013,52(2):604-611
Using a two potential approach, dyon solutions have been found in the temporal and non-temporal gauges for a non-Abelian theory. Both the charges, electric and magnetic, of the temporal dyon solution are topological, while for the non-temporal case both charges are partially topological. 相似文献
19.
We present a detailed derivation of the renormalization group equations for two-dimensional electromagnetic Coulomb gases whose charges lie on a triangular lattice (magnetic charges) and its dual (electric charges). The interactions between the charges involve both angular couplings and a new electromagnetic potential. This motivates the denomination of “elastic” Coulomb gas. Such elastic Coulomb gases arise naturally in the study of the continuous melting transition of two-dimensional solids coupled to a substrate, either commensurate or with quenched disorder. 相似文献
20.
Xiao-Xiong Zeng Qiang Li Jia-Bo Hao 《International Journal of Theoretical Physics》2009,48(4):1090-1097
Tunneling of charged and magnetized Dirac particles from the Kerr-Newman-Ads black hole with magnetic charges is discussed
in this paper. Owing to the electric and magnetic fields would couple with gravity field, we introduce the Dirac equation
of charged and magnetized particles. Then by redefining the equivalent charge and gauge potential corresponding to the source
with electric and magnetic charges, we discuss this tunneling once and obtain the same Hawking temperature. Both results show
that the fermions tunneling formalism also come into existence in the charged and magnetized background space time. 相似文献