arXiv subjects

S. Hayakawa

Publications and source records attributed to S. Hayakawa.

23 records · Page 2Linked to original sources

arXiv2010

30S Beam Development and X-ray Bursts

Over the past three years, we have worked on developing a well-characterized 30S radioactive beam to be used in a future experiment aiming to directly measure the 30S(alpha,p) stellar reaction rate within the Gamow window of Type I X-ray bursts. The importance of the 30S(alpha,p) reaction to X-ray bursts is discussed. Given the astrophysical motivation, the successful results of and challenges involved in the production of a low-energy 30S beam are detailed. Finally, an overview of our future plans regarding this on-going project are presented.

nucl-ex↗

arXiv2010

30S(alpha,p) in X-Ray Bursts at CRIB

nucl-ex↗

arXiv2003

Boundary Condition and the Cosmological Constant

We discuss a model in which the boundary condition decides the four dimensional cosmological constant. It is reviewed in a primitive way that boundary conditions are required by the action principle.

hep-th↗

arXiv2001

Warped Compactification with a Four-Brane

Warped compactification of the six-dimensional bulk with a negative cosmological constant is realized with a 4-brane along with an abelian gauge theory. No fine tuning of couplings are needed to obtain the vanishing cosmological constant in four dimensions, as is the case for the bulk with a positive cosmological constant.

hep-th↗

arXiv2000

Warped Compactification with an Abelian Gauge Theory

We investigate warped compactification with an abelian gauge theory in six dimensions. The vanishing cosmological constant in four dimensions can generically be realized with a regular metric even in a 3-brane background without fine tuning of couplings.

hep-th↗