203 citations · 1.5k across the 73 of their papers we have counts for
39 papers · 1 filter
Abelian and Non-Abelian Monopole Configuration in Condensed Matters
Yunkyu Bang, Y. M. Cho, Tieyan Si +1
We discuss the Abelian and non-Abelian monopoles which could exist in condensed matters. We show how the Dirac monopole can be regularized by the charge screening, and argue that t…
Regularization of Electroweak Monopole by Charge Screening and BPS Energy Bound
Pengming Zhang, Li-Ping Zou, Y. M. Cho
We show that the electroweak monopole can be regularized with a non-vacuum electromagnetic permittivity. This allows us to set a new BPS bound for the monopole mass, which implies…
Abelian Decomposition and Weyl Symmetric Effective Action of SU(3) QCD
Y. M. Cho, Franklin H. Cho
We show how to calculate the effective potential of SU(3) QCD which tells that the true minimum is given by the monopole condensation. To do this we make the gauge independent Weyl…
Multiply Phased Traveling BPS Vortex
Kyoungtae Kimm, J. H. Yoon, Y. M. Cho
We present the multiply phased current carrying vortex solutions in the U(1) gauge theory coupled to an -component SU(N+1) scalar multiplet in the Bogomolny limit. Our vorte…
Gravitationally Coupled Electroweak Monopole
Y. M. Cho, Kyoungtae Kimm, J. H. Yoon
We present a family of gravitationally coupled electroweak monopole solutions in Einstein-Weinberg-Salam theory. Our result confirms the existence of globally regular gravitating e…
New Topological Structures of Skyrme Theory: Baryon Number and Monopole Number
Y. M. Cho, Kyoungtae Kimm, J. H. Yoon +1
Based on the observation that the skyrmion in Skyrme theory can be viewed as a dressed monopole, we show that the skyrmions have two independent topology, the baryon topology $π_3(…
Dimensional Transmutation by Monopole Condensation in QCD
Y. M. Cho
We compare two competing conjectures of the color confinement in QCD, the monopole condensation and the Abelian dominance, and show that it is the monopole condensation which is re…
Weyl symmetric structure of QCD vacuum
Y. M. Cho, D. G. Pak, P. M. Zhang +1
We consider Weyl symmetric structure of the classical vacuum in quantum chromodynamics. In the framework of formalism of gauge invariant Abelian projection we show that classical v…
Vacuum tunneling in gravity
Y. M. Cho, D. G. Pak
Topologically non-trivial vacuum structure in gravity models with Cartan variables (vielbein and contortion) is considered. We study the possibility of vacuum space-time tunneling…
Abelian decomposition of Einstein's theory: Reformulation of general relativity
Y. M. Cho, Sang-Woo Kim, J. H. Kim
We propose a reformulation of general relativity by making the Abelian decomposition of Einstein's theory. Based on the view that Einstein's theory can be interpreted as a gauge th…
Dirac Quantization of Restricted QCD
Y. M. Cho, Soon-Tae Hong, J. H. Kim +1
We discuss the quantization of the restricted gauge theory of SU(2) QCD regarding it as a second-class constraint system, and construct the BRST symmetry of the constrained system…
Light Propagation Effects In QED: Effective Action Approach
Y. M. Cho, D. G. Pak, M. L. Walker
The effects of light propagation in constant magnetic and electric backgrounds are considered in the framework of the effective action approach. We use the exact analytic series re…
Effective Potential of QCD
Y. M. Cho, J. H. Kim, D. G. Pak
We present a simple method to calculate the one-loop effective action of QCD which reduces the calculation to that of SU(2) QCD. For the chromomagnetic background we show that the…
A Stable Magnetic Background in SU(2) QCD
Y. M. Cho, D. G. Pak
Motivated by the instability of the Savvidy-Nielsen-Olesen (SNO) vacuum we make a systematic search for a stable magnetic background in pure SU(2) QCD. It is shown that Wu-Yang mon…
Stable Monopole-Antimonopole String Background in SU(2) QCD
Y. M. Cho, D. G. Pak
Motivated by the instability of the Savvidy-Nielsen-Olesen vacuum we make a systematic search for a stable magnetic background in pure SU(2) QCD. It is shown that a pair of axially…
Gauge Invariance and Stability of SNO vacuum in QCD
Y. M. Cho
We point out a critical defect in the calculation of the functional determinant of the gluon loop in the Savvidy-Nielsen-Olesen (SNO) effective action. We prove that the gauge inva…
Knot Topology of QCD Vacuum
Y. M. Cho
We show that one can express the knot equation of Skyrme theory completely in terms of the vacuum potential of SU(2) QCD, in such a way that the equation is viewed as a generalized…
Chromoelectric Knot in QCD
Y. M. Cho
We argue that the Skyrme theory describes the chromomagnetic (not chromoelectric) dynamics of QCD. This shows that the Skyrme theory could more properly be interpreted as an effect…
New Interpretation of Skyrme Theory
Y. M. Cho, B. S. Park, P. M. Zhang
Based on the proposal that the Skyrme theory is a theory of monopole we provide a new interpretation of Skyrme theory, that the theory can also be viewed as an effective theory of…
Cho and Pak reply to Lamm et al. comment on "A Convergent Series for the QED Effective Action"
Y. M. Cho
Cho and Pak reply to Lamm et al. [hep-th/0007108] comment on "A Convergent Series for the Effective Action of QED" [hep-th/0006057].
Color Reflection Invariance and Monopole Condensation in QCD
Y. M. Cho
We review the quantum instability of the Savvidy-Nielsen-Olesen (SNO) vacuum of the one-loop effective action of SU(2) QCD, and point out a critical defect in the calculation of th…
Analytic Electroweak Dyon
Y. M. Cho
We present analytic monopole and dyon solutions whose energy is fixed by the electroweak scale. Our result shows that genuine electroweak monopole and dyon could exist whose mass s…
Stability of Monopole Condensation in SU(2) QCD
Y. M. Cho, M. L. Walker
We propose to resolve the controversy regarding the stability of the monopole condensation in QCD by calculating the imaginary part of the one-loop effective action perturbatively.…
Anti-de Sitter Black Holes, Thermal Phase Transition and Holography in Higher Curvature Gravity
Y. M. Cho, Ishwaree P. Neupane
We study anti-de Sitter black holes in the Einstein-Gauss-Bonnet and the generic R^2 gravity theories, evaluate different thermodynamic quantities, and also examine the possibiliti…