Kyoungtae Kimm

Anyonic Bogomol'nyi solitons in a gauged O(3) sigma model.

We introduce the self-dual abelian gauged

SURFACE GRAVITY AND HAWKING TEMPERATURE FROM ENTROPIC FORCE VIEWPOINT

O(3)

The self-dual Chern-Simons CP(N) models

sigma models where the Maxwell and Chern-Simons terms constitute the kinetic terms for the gauge field. These models have quite rich structures and various limits. Our models are found to exhibit both symmetric and broken phases of the gauge group. We discuss the pure Chern-Simons limit in some detail and study rotationally symmetric solitons.

Mass of the Electroweak Monopole

We consider a freely falling holographic screen for the Schwarzschild and Reissner–Nordstrom black holes and evaluate the entropic force a la Verlinde. When the screen crosses the event horizon, the temperature of the screen agrees to the Hawking temperature and the entropic force gives rise to the surface gravity for both of the black holes.

Global vortex and black cosmic string

Abstract We study the Chern-Simons CP(N) models with a global U(1) symmetry and found the self-dual models among them. The Bogomolnyi-type bound in these self-dual models is a nontrivial generalization of that in the pure CP(N) models. Our models have quite a rich vacuum and soliton structure and approach the many known gauged self-dual models in an appropriate limit.

SCHWARZSCHILD–DE SITTER BLACK HOLE FROM ENTROPIC VIEWPOINT

We present three independent methods to estimate the mass of the electroweak monopole. Our result strongly implies the existence of a genuine electroweak monopole of mass around 4–10 TeV, which could be detected by MoEDAL at present Large Hadron Collider (LHC). We emphasize that the discovery of the electroweak monopole should be the final test of the Standard Model.

CHARGED BLACK COSMIC STRING

We study global vortices coupled to (2+1)-dimensional gravity with a negative cosmological constant. We found nonsingular vortex solutions in

Gravitationally Coupled Electroweak Monopole

{\ensuremath{\varphi}}^{4}

Anyonic Bogomolnyi solitons in a gauged O(3) sigma model

theory with a broken U(1) symmetry, of which the spacetimes do not involve a physical curvature singularity. When the magnitude of a negative cosmological constant is larger than a critical value at a given symmetry breaking scale, the spacetime structure is a regular hyperbola; however, it becomes a charged black hole when the magnitude of the cosmological constant is less than the critical value. We explain through a duality transformation the reason why a static global vortex which is electrically neutral forms a black hole with electric charge. Under the present experimental bound of the cosmological constant, implications for cosmology as a straight black cosmic string are also discussed in comparison with a global U(1) cosmic string in the spacetime of the zero cosmological constant.

Noncommutative relativistic U(N) Chern?Simons solitons

In a Schwarzschild–de Sitter space, we consider an equipotential surface which consists of two holographic screens. Adapting the Bousso–Hawkings reference point of vanishing force, we divide the space into two regions, which are from the reference point to each holographic screen. These two regions can be treated as independent thermodynamical systems, because the Bousso–Hawking reference point with zero temperature behaves like a thermally insulating wall. The entropy obtained in this way agrees with the conventional results: (i) when the holographic screens lie at the black hole and cosmological horizons, (ii) in the Nariai limit.