46 citations · 66 across the 3 of their papers we have counts for
5 papers
Instanton Determinant with Arbitrary Quark Mass: WKB Phase-shift Method and Derivative Expansion
Gerald V. Dunne, Jin Hur, Choonkyu Lee +1
The fermion determinant in an instanton background for a quark field of arbitrary mass is studied using the Schwinger proper-time representation with WKB scattering phase shifts fo…
Seiberg-Witten-type Maps for Currents and Energy-Momentum Tensors in Noncommutative Gauge Theories
Rabin Banerjee, Choonkyu Lee, Hyun Seok Yang
We derive maps relating the currents and energy-momentum tensors in noncommutative (NC) gauge theories with their commutative equivalents. Some uses of these maps are discussed. Es…
Stationary Perturbation Theory with Spatially Well-separated Potentials
Seok Kim, Choonkyu Lee
We present a new perturbation theory for quantum mechanical energy eigenstates when the potential equals the sum of two localized, but not necessarily weak potentials $V_{1}(\vec{r…
On mass dependences of the one-loop effective action in simple backgrounds
O-Kab Kwon, Choonkyu Lee, Hyunsoo Min
If background fields are soft on the scale set by mass of the particle involved, a reliable approximation to the field-theoretic one-loop effective action is obtained by a systemat…
Charged Particle System in Uniform Magnetic and Electric Fields: The Role of Galilean Transformation
Chanju Kim, Choonkyu Lee
Galilean transformation relates a physical system under mutually perpendicular uniform magnetic and electric fields to that under uniform magnetic field only. This allows a complet…