421 citations · 9k across the 167 of their papers we have counts for
11 papers · 1 filter
Two-Loop Self-Dual QED
Gerald V. Dunne, Christian Schubert
We present explicit closed-form expressions for the two-loop Euler-Heisenberg Lagrangians in a constant self-dual field, for both spinor and scalar QED. The simplicity of these rep…
Zero modes, beta functions and IR/UV interplay in higher-loop QED
Gerald V. Dunne, Holger Gies, Christian Schubert
We analyze the relation between the short-distance behavior of quantum field theory and the strong-field limit of the background field formalism, for QED effective Lagrangians in s…
Finite Temperature Induced Fermion Number for Quarks in a Chiral Field
Gerald V. Dunne, Kumar Rao
We compute the finite temperature correction to the induced fermion number for fermions coupled to a static SU(2) chiral background, using the derivative expansion technique. At ze…
Two-color QCD in 3D at finite baryon density
Gerald V. Dunne, Shinsuke M. Nishigaki
We study the low energy phase structure of SU(2) gauge theories in three-dimensional spacetime, at finite baryon density. The pseudoreality of representations of SU(2) permits an a…
Fundamental Matter and the Deconfining Phase Transition in 2+1 D
Gerald V. Dunne, Alex Kovner, Shinsuke M. Nishigaki
We analyze the effect of heavy fundamentally charged particles on the finite temperature deconfining phase transition in the 2+1 dimensional Georgi-Glashow model. We show that in t…
Perturbative--nonperturbative connection in quantum mechanics and field theory
Gerald V. Dunne
On the occasion of this ArkadyFest, celebrating Arkady Vainshtein's 60th birthday, I review some selected aspects of the connection between perturbative and nonperturbative physics…
Two-loop self-dual Euler-Heisenberg Lagrangians (II): Imaginary part and Borel analysis
Gerald V. Dunne, Christian Schubert
We analyze the structure of the imaginary part of the two-loop Euler-Heisenberg QED effective Lagrangian for a constant self-dual background. The novel feature of the two-loop resu…
Two-loop self-dual Euler-Heisenberg Lagrangians (I): Real part and helicity amplitudes
Gerald V. Dunne, Christian Schubert
We show that, for both scalar and spinor QED, the two-loop Euler-Heisenberg effective Lagrangian for a constant Euclidean self-dual background has an extremely simple closed-form e…
Duality and Self-Duality (Energy Reflection Symmetry) of Quasi-Exactly Solvable Periodic Potentials
Gerald V. Dunne, M. Shifman
A class of spectral problems with a hidden Lie-algebraic structure is considered. We define a duality transformation which maps the spectrum of one quasi-exactly solvable (QES) per…
Finite Temperature Induced Fermion Number In The Nonlinear sigma Model In (2+1) Dimensions
Gerald V. Dunne, Justo Lopez-Sarrion, Kumar Rao
We compute the finite temperature induced fermion number for fermions coupled to a static nonlinear sigma model background in (2+1) dimensions, in the derivative expansion limit. W…
Particle number fractionization of an atomic Fermi-Dirac gas in an optical lattice
Janne Ruostekoski, Gerald V. Dunne, Juha Javanainen
We show that a dilute 2-species gas of Fermi-Dirac alkali-metal atoms in a periodic optical lattice may exhibit fractionization of particle number when the two components are coupl…