J. Yokoyama

Publication List Details

Period

1990 - 2009

Number

29

Co-Authors

On the realization of the MSSM inflation (2009)

Kamada, Kohei, Yokoyama, J.

We study the fine-tuning problem on the initial condition of inflation in the minimal supersymmetric standard model (MSSM), associated with the narrowness of the slow-roll region. We consider two...

DECIGO pathfinder (2008)

Ando, M., Kawamura, Seiji, Nakamura, T., Tsubono, K., Tanaka, T., Funaki, I., ...

DECIGO pathfinder (DPF) is a milestone satellite mission for DECIGO (DECi-hertz Interferometer Gravitational wave Observatory) which is a future space gravitational wave antenna. DECIGO is expected...

The Japanese space gravitational wave antenna: DECIGO (2008)

Kawamura, Seiji, Ando, M., Nakamura, T., Tsubono, K., Tanaka, T., Funaki, I., ...

DECi-hertz Interferometer Gravitational wave Observatory (DECIGO) is the future Japanese space gravitational wave antenna. DECIGO is expected to open a new window of observation for gravitational...

The Japanese space gravitational wave antenna - DECIGO (2008)

Kawamura, Seiji, Ando, M., Nakamura, T., Tsubono, K., Tanaka, T., Funaki, I., ...

DECi-hertz Interferometer Gravitational wave Observatory (DECIGO) is the future Japanese space gravitational wave antenna. The goal of DECIGO is to detect gravitational waves from various kinds of...

Genetic and acoustic population structuring in the Okinawa least horseshoe bat: Are intercolony acoustic differences maintained by vertical maternal transmission? (2008)

Yoshino, Hajime, Armstrong, Kyle Nicholas, Izawa, Masako, Yokoyama, J., Kawata, Masakado

The origin and meaning of echolocation call frequency variation within rhinolophid bats is not well understood despite an increasing number of allopatric and sympatric examples being documented. A...

Genetic and acoustic population structuring in the Okinawa least horseshoe bat: Are intercolony acoustic differences maintained by vertical maternal transmission? (2008)

Yoshino, Hajime, Armstrong, Kyle Nicholas, Izawa, Masako, Yokoyama, J., Kawata, Masakado

The origin and meaning of echolocation call frequency variation within rhinolophid bats is not well understood despite an increasing number of allopatric and sympatric examples being documented. A...

Joint LIGO and TAMA300 search for gravitational waves from inspiralling neutron star binaries (2006)

Abbott, B., Abbott, R., Adhikari, R., Ageev, A., Agresti, J., Ajith, P., ...

We search for coincident gravitational wave signals from inspiralling neutron star binaries using LIGO and TAMA300 data taken during early 2003. Using a simple trigger exchange method, we perform an...

Joint LIGO and TAMA300 search for gravitational waves from inspiralling neutron star binaries (2006)

Abbott, B., Abbott, R., Adhikari, R., Ageev, A., Agresti, Juri, Ajith, P., ...

We search for coincident gravitational wave signals from inspiralling neutron star binaries using LIGO and TAMA300 data taken during early 2003. Using a simple trigger exchange method, we perform an...

Results of the search for inspiraling compact star binaries from TAMA300's observation in 2000-2004 (2006)

Akutsu, Tomomi, Akutsu, Tomotadu, Ando, Masaki, Arai, Koji, Araya, Akito, Asada, H., ...

We analyze the data of the TAMA300 detector to search for gravitational waves from inspiraling compact star binaries with masses of the component stars in the range 1M[sun]–3M[sun]. In this...

The Japanese space gravitational wave antenna - DECIGO (2006)

Kawamura, Seiji, Nakamura, T., Ando, M., Seto, N., Tsubono, K., Numata, K., ...

DECi-hertz Interferometer Gravitational wave Observatory (DECIGO) is the future Japanese space gravitational wave antenna. It aims at detecting various kinds of gravitational waves between 1 mHz and...

D-term Inflation and Leptogenesis by Right-handed Sneutrino (2005)

Kadota, Kenji, Yokoyama, J.

We discuss a D-term inflation scenario where a right-handed sneutrino can be an inflaton field leading to a viable inflation and leptogenesis, with a minimal form of K\"ahler potential. The decay of...

Generation of Large-Scale Magnetic Fields from Dilaton Inflation in Noncommutative Spacetime (2005)

Bamba, Kazuharu, Yokoyama, J.

Generation of large-scale magnetic fields is studied in dilaton electromagnetism in noncommutative inflationary cosmology, taking into account the effects of the spacetime uncertainty principle...

Large-scale magnetic fields from dilaton inflation in noncommutative spacetime (2004)

Bamba, Kazuharu, Yokoyama, J.

The generation of large-scale magnetic fields is studied in dilaton electromagnetism in noncommutative inflationary cosmology taking into account the effects of the spacetime uncertainty principle...

Large-scale magnetic fields from inflation in dilaton electromagnetism (2003)

Bamba, Kazuharu, Yokoyama, J.

The generation of large-scale magnetic fields is studied in dilaton electromagnetism in inflationary cosmology, taking into account the dilaton's evolution throughout inflation and reheating until it...

Degenerate vacua as the origin of the dark energy (2002)

Yokoyama, J

I propose a new mechanism to account for the observed tiny but finite dark energy in terms of a non-Abelian Higgs theory, which has infinitely many perturbative vacua characterized by a winding...

Degenerate vacua as the origin of the dark energy (2002)

Yokoyama, J

I propose a new mechanism to account for the observed tiny but finite dark energy in terms of a non-Abelian Higgs theory, which has infinitely many perturbative vacua characterized by a winding...

Topological $R^{4}$ Inflation (1998)

Ellis, Jonathan Richard, Kaloper, Nemanja, Olive, Keith A, Yokoyama, J

We consider the possibility that higher-curvature corrections in some variant of $M$ theory could drive inflation after the compactification to four dimensions. Assuming that the descent from eleven...

Pollination mode in fig wasps: the predictive power of correlated traits.

Kjellberg, F., Jousselin, E., Bronstein, J. L., Patel, A., Yokoyama, J., Rasplus, J. Y.

The over 700 species of Ficus are thought to have co-speciated with their obligate pollinators (family Agaonidae). Some of these wasp species pollinate figs actively, while others are passive...

A monoclonal antibody specifically reactive with Ewing's sarcoma.

Hara, S., Ishii, E., Tanaka, S., Yokoyama, J., Katsumata, K., Fujimoto, J., ...

We have developed a mouse monoclonal antibody 5C11 (IgG2a) against cell surface antigen of Ewing's sarcoma (ES). 5C11 specifically reacted with ESs but not with other small round cell tumours in...