120447542
Inflation-driving scalar field
Abstract The quantum mechanical behavior of the Higgs field which drives inflation of the early universe is discussed. The standard picture of the new inflationary universe cannot be realized in the minimal SU(5) model. A realistic model in which inflation is driven by a complex gauge singlet Higgs field containing the axion is presented.
122674516
Point splitting regularization in a supersymmetric gauge field theory
Abstract Point splitting regularization is discussed in a supersymmetric Yang-Mills field theory. A supersymmetry and gauge invariant point-split supercurrent operator, along with the point-split lagrangian density, is constructed. A superconformal anomaly is computed.
124346945
Fluctuations in the New Inflationary Universe
This invention relates to novel rolling type athletic apparatus taking advantage of the characteristic of stilts which comprises a pair of vertical rods each consisting of two pipces telescopically connected to each other. The upper end of each vertical rod is bent to form a handle. Each rod is provided at its lower end with a wheel having a brake and a one-way clutch. A step is mounted on the upper portion of the wheel.
96475847
Regularizations and superconformal anomalies
By using different regularization methods we demonstrate that supersymmetry invariance is maintained up to one-loop order in supersymmetric gauge theories and calculate the superconformal anomalies.
118191225
Cosmological Consequences of Grand Unified Theories
115847230
A Slow Rollover Phase Transition in the Schrdinger Picture
118608368
Scale invariant power spectrum in Hořava-Lifshitz cosmology without matter
In this paper we investigate the physical implications of the dynamical scalar mode in pure Hořava-Lifshitz gravity on cosmology. We find that it can produce a scale-invariant power spectrum in UV era if the detailed balance condition on the action is relaxed. This indicates that the physical scalar mode may seed the large scale structure and Hořava-Lifshitz cosmology could be a qualified alternative to inflationary scenario.
119250849
Power spectra of scalar and tensor modes in modified Horava-Lifshitz gravity
In Horava-Lifshitz gravity, the extra dynamical scalar mode could play significant role in cosmology. However it has been pointed out that such a scalar may suffer from the strong coupling problem in IR. We address this issue in this paper. Our analysis shows that the scalar mode could decouple naturally at \lambda=1 due to the extra gauge symmetry. On the other hand, the fact that the scalar mode becomes ghost when 1/3<\lambda<1 is a real challenge to the theory. We try to overcome this problem by modifying the action such that the RG flow lies outside the problematic region. We discuss the cosmological implications of the action and calculate the power spectra of scalar and tensor modes.