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We calculate the effective potential of a strong magnetic field induced by fermions with anomalous magnetic moments which couple to the electromagnetic field in the form of the Pauli interaction. For a uniform magnetic field, we find the…

High Energy Physics - Theory · Physics 2009-11-13 Hyun Kyu Lee , Yongsung Yoon

We calculate the production rate of neutral fermions in linear magnetic fields through the Pauli interaction. It is found that the production rate is exponentially decreasing function with respect to the inverse of the magnetic field…

High Energy Physics - Theory · Physics 2009-11-11 Hyun Kyu Lee , Yongsung Yoon

The effective potential for the composite fields responsible for chiral symmetry breaking in weakly coupled QED in a magnetic field is derived. The global minimum of the effective potential is found to acquire a non-vanishing expectation…

High Energy Physics - Theory · Physics 2016-08-25 D. -S. Lee , P. N. McGraw , Y. J. Ng , I. A. Shovkovy

The effective potential for a scalar theory with $\lambda\phi^4$ interaction, coupled to a massless fermion through Yukawa interaction is calculated by summing over infinite number of two particle irreducible (2PI) diagrams of two different…

High Energy Physics - Theory · Physics 2026-04-28 Somnath Majumder , Krishnendu Mukherjee

Vacuum instability of the strong electromagnetic field has been discussed since long time ago. The instability of the strong electric field due to creation of electron pairs is one of the examples, which is known as Schwinger process. What…

High Energy Physics - Phenomenology · Physics 2016-10-19 Hyun Kyu Lee

We show that an imaginary magnetic field(IMF), which can be generated in non-Hermitian systems with spin-dependent dissipations, can greatly enhance the s-wave pairing and superfluidity of spin-1/2 fermions, in distinct contrast to the…

Quantum Gases · Physics 2019-04-16 Lihong Zhou , Xiaoling Cui

We estimate the composite fermion effective mass for a general two particle potential r^{-\alpha} using exact diagonalization for polarized electrons in the lowest Landau level on a sphere. Our data for the ground state energy at filling…

Mesoscale and Nanoscale Physics · Physics 2016-08-24 Uwe Girlich , Meik Hellmund

The residual interaction between composite fermions (CFs) can express itself through higher order fractional Hall effect. With the help of diagonalization in a truncated composite fermion basis of low-energy many-body states, we predict…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 Chia-Chen Chang , Sudhansu S. Mandal , Jainendra K. Jain

We discuss the equations for the bound one-active electron states based on the analytic solutions of the Schrodinger and Pauli equations for a uniform magnetic field and a single attractive $\delta({\bf r})$-potential. It is vary important…

High Energy Physics - Phenomenology · Physics 2015-05-27 V. N. Rodionov , G. A. Kravtsova

Magnetotransport measurements of Composite Fermions (CF) are reported in 50 T pulsed magnetic fields. The CF effective mass is found to increase approximately linearly with the effective field $B^*$, in agreement with our earlier work at…

Condensed Matter · Physics 2009-10-28 D. R. Leadley , M. van der Burgt , R. J. Nicholas , C. T. Foxon , J. J. Harris

We study the effect of a constant magnetic field on the imaginary part of a quarkonia potential in a strongly-coupled $\mathcal{N}=4$ SYM plasma. We consider the pair axis to be aligned perpendicularly and parallel to the magnetic field,…

High Energy Physics - Theory · Physics 2018-02-07 Zi-qiang Zhang , De-fu Hou

The model of Composite Fermions for describing interacting electrons in two dimensions in the presence of a magnetic field is described. In this model, charged Fermions are combined with an even number of magnetic flux quanta in such a way…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 B. Kramer , N. Magnoli , E. Mariani , M. Merlo , F. Napoli , M. Sassetti

It is shown that the use of a density dependent effective Pauli potential together with a nucleon-nucleon interaction potential plays a crucial role to reproduce not only the binding energies but also the matter root mean square radii of…

Nuclear Theory · Physics 2009-05-13 M. Angeles Perez-Garcia , K. Tsushima , A. Valcarce

The time-evolution and space-distribution of internal electromagnetic fields in heavy-ion reactions at beam energies between 200 and 2000 MeV/nucleon are studied within an Isospin-dependent Boltzmann-Uhling-Uhlenbeck transport model IBUU11.…

Nuclear Theory · Physics 2015-05-28 Li Ou , Bao-An Li

By developing an algorithm for evaluating the basis states for the composite fermions with negative effective magnetic field, we perform the composite-fermion-diagonalization study for the fully spin-polarized fractional quantum Hall states…

Mesoscale and Nanoscale Physics · Physics 2015-12-14 Sutirtha Mukherjee , Sudhansu S. Mandal

We discuss the generation of large-scale magnetic fields due to the breaking of the conformal invariance in the electromagnetic field through the $CPT$-even dimension-six Chern-Simons-like effective interaction with a fermion current in…

Astrophysics · Physics 2008-12-18 K. Bamba , C. Q. Geng , S. H. Ho

We present a numerical study of the fermion-induced effective action in the presence of a static inhomogeneous magnetic field for both 3+1 and 2+1 dimensional QED using a novel approach. This approach is appropriate for cylindrically…

High Energy Physics - Theory · Physics 2009-10-31 Pavlos Pasipoularides

On the basis of analytic solutions of Schrodinger and Pauli equations for a uniform magnetic field and a single attractive $\delta({\bf r})$-potential the equations for the bound one-active electron states are discussed. It is vary…

High Energy Physics - Phenomenology · Physics 2009-11-13 V. N. Rodionov

Neutral fermions of spin 1/2 with magnetic moment can interact with electromagnetic fields through nonminimal coupling. In 2+1 dimensions the electromagnetic field strength plays the same role to the magnetic moment as the vector potential…

High Energy Physics - Theory · Physics 2008-11-26 Qiong-gui Lin

In tunnel junctions of which at least one side is a ferromagnet, very large magnetic polarization change ($\approx 0.1 \mu_B$) and splitting of the spin up and spin down Fermi energy ($\approx 0.1 eV$) can be created under steady state…

Materials Science · Physics 2007-05-23 S. T. Chui , J. -T. Wang , Li Zhou , K. Esfarjani , Y. Kawazoe
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