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Weak Interaction Singlet and Strong CP Invariance

- Jihn E. Kim
- Physics
- 9 July 1979

Strong $\mathrm{CP}$ invariance is automatically preserved by a spontaneously broken chiral ${\mathrm{U}(1)}_{4}$ symmetry. A weak-interaction singlet heavy quark $Q$, a new scalar meson… Expand

Axions and the Strong CP Problem

- Jihn E. Kim, G. Carosi
- Physics
- 4 March 2010

Current upper bounds on the neutron electric dipole moment constrain the physically observable quantum chromodynamic (QCD) vacuum angle… Expand

Completing natural inflation

- Jihn E. Kim, H. Nilles, M. Peloso
- Physics
- 12 September 2004

If the inflaton is a pseudo-scalar axion, the axion shift symmetry can protect the flatness of its potential from too large radiative corrections. This possibility, known as natural inflation,… Expand

The μ-problem and the strong CP-problem

- Jihn E. Kim, H. Nilles
- Physics
- 12 April 1984

Abstract We investigate a possible connection of a solution of the strong CP-problem and the generation of a mass term μ in the low energy Higgs superpotential of supersymmetric models. This… Expand

Light Pseudoscalars, Particle Physics and Cosmology

- Jihn E. Kim
- Physics
- 1 June 1987

Abstract We review physics of light pseudoscalars (axions, majorons and familons) and their effects in cosmology. The axions which solve the strong CP problem play important roles in astrophysics and… Expand

Cosmological gravitino regeneration and decay

- J. Ellis, Jihn E. Kim, D. Nanopoulos
- Physics
- 20 September 1984

Abstract We present a detailed study of gravitino production and decay subsequent to cosmological inflation. We calculate the cross sections for gravitino production in collisions of particles in the… Expand

Update of axion CDM energy density

- K. J. Bae, J. Huh, Jihn E. Kim
- Physics
- 3 June 2008

We improve the estimate of the axion CDM energy density by considering the new values of current quark masses, the QCD phase transition effect and a possible anharmonic effect.

Axinos as dark matter

- L. Covi, H. Kim, Jihn E. Kim, L. Roszkowski
- Physics
- 31 December 2000

Supersymmetric extensions of the Standard Model that incorporate the axion solution to the strong CP problem necessarily contain also the axino, the fermionic partner of the axion. In contrast to the… Expand

AXINOS AS COLD DARK MATTER

- L. Covi, Jihn E. Kim, L. Roszkowski
- Physics
- 3 May 1999

We show that axinos produced in the early Universe in the decay of the lightest neutralinos are a compelling candidate for cold dark matter. We argue that axinos may well provide the main component… Expand

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