Kek Cosmophysics Group Inaugural Conference “Accelerators in the Universe“: Interplay Between High Energy Physics and Cosmophysics; Held in Tsukuba, Japan 12-14 March 2008 Book

Dark Energy E. W. Kolb Kolb, E. W. 3

Dark Energy and Modified Gravity S. Tsujikawa Tsujikawa, S. 18

Probing the Early Universe with Multichannel Observations J. Yokoyama Yokoyama, J. 23

Impact of Massive Neutrinos on Nonlinear Matter Power Spectrum S. Saito Saito, S. M. Takada Takada, M. A. Taruya Taruya, A. 32

A Solution to the IR Divergence Problem of Interacting Inflaton Field Y. Urakawa Urakawa, Y. T. Tanaka Tanaka, T. 37

Gravity in Brane World T. Tanaka Tanaka, T. 42

Inflaton Decay in Supergravity and Gravitino Problem F. Takahashi Takahashi, F. 57

Inflationary Cosmology of Axion Models in Supergravity K. Nakayama Nakayama, K. 61

POLARBEAR: Ultra-high Energy Physics with Measurements of CMB Polarization A. T. Lee Lee, A. T. H. Tran Tran, H. P. Ade Ade, P. K. Arnold Arnold, K. J. Borrill Borrill, J. M. A. Dobbs Dobbs, M. A. J. Errard Errard, J. N. Halverson Halverson, N. W. L. Holzapfel Holzapfel, W. L. J. Howard Howard, J. A. Jaffe Jaffe, A. B. Keating Keating, B. Z. Kermish Kermish, Z. E. Linder Linder, E. N. Miller Miller, N. M. Myers Myers, M. A. Niarchou Niarchou, A. H. Paar Paar, H. C. Reichardt Reichardt, C. H. Spieler Spieler, H. B. Steinbach Steinbach, B. R. Stompor Stompor, R. C. Tucker Tucker, C. E. Quealy Quealy, E. P. L. Richards Richards, P. L. O. Zahn Zahn, O. 66

Jumping into CMB Polarization Measurements - A New Group at KEK M. Hazumi Hazumi, M. 78

Application of Michelson Type Bolometric Interferometer to CMB B-Mode Polarization Observations M. Hattori Hattori, M. I. S. Ohta Ohta, I. S. Y. Chinone Chinone, Y. Y. Luo Luo, Y. K. Koga Koga, K. 89

Interferometric Gravitational-Wave Detectors: Current Status and Future Plans M. Ando Ando, M.97

Non-Gaussianity, Spectral Index, and Tensor Modes in Mixed Inflaton and Curvaton Models K. Ichikawa Ichikawa, K. T. Suyama Suyama, T. T. Takahashi Takahashi, T. M. Yamaguchi Yamaguchi, M. 116

Primordial Non-Gaussianities in New Ekpyrotic Cosmology S. Mizuno Mizuno, S. K. Koyama Koyama, K. F. Vernizzi Vernizzi, F. D. Wands Wands, D. 121

New Prospects in High Energy Astrophysics R. D. Blandford Blandford, R. D. 126

Collapse of Rapidly Rotating Massive Stellar Core to a Black Hole in Full GR Y. Sekiguchi Sekiguchi, Y. 140

Numerical Study of Stationary Black Hole Magnetospheres - Toward Blandford-Znajek Mechanism by Fast Rotating Black Holes Y. Takamori Takamori, Y. H. Ishihara Ishihara, H. M. Kimura Kimura, M. K.-I. Nakao Nakao, K.-I. M. Takahashi Takahashi, M. C.-M. Yoo Yoo, C.-M. 145

Gamma-ray Bursts and Particle Astrophysics: Future Prospects P. Meszaros Meszaros, P. 150

Gamma-ray Bursts and Particle Acceleration K. Asano Asano, K. 165

High-Energy Neutrinos and Gamma-Ray Bursts K. Murase Murase, K. 170

Astrophysical Accelerators of Ultrahigh Energy Cosmic Rays S. Inoue Inoue, S. 175

Gamma-Ray Burst Polarization K. Toma Toma, K. 186

High Energy Observations of AGN Jets and Their Future Prospects J. Kataoka Kataoka, J. 191

Verification of Hadron Interaction Models of Cosmic Rays at 10[superscript 17] eV by the LHCf Experiment Y. Itow Itow, Y. 206

Towards Unravelling the Structural Distribution of Ultra-High-Energy Cosmic Ray Sources H. Takami Takami, H. K. Sato Sato, K. 211

Program 217

Photos 221

Author Index 231