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5 papers · 1 filter
Scalar Cosmological Perturbations in M-theory with Higher Derivative Corrections
Kazuho Hiraga, Yoshifumi Hyakutake
We investigate the inflationary expansion of the universe induced by higher curvature corrections in M-theory. The inflationary evolution of the geometry is discussed in ref.[1], t…
Frequency domain variant of Velvet noise and its application to acoustic measurements
Hideki Kawahara, Ken-Ichi Sakakibara, Mitsunori Mizumachi +3
We propose a new family of test signals for acoustic measurements such as impulse response, nonlinearity, and the effects of background noise. The proposed family complements diffi…
The -equivalence classes of genus one knots
Kouki Sato
The -equivalence is an equivalence relation on the knot concordance group. This relation can be seen as a certain stable equivalence on knot Floer complexes , an…
Filtered instanton Floer homology and the homology cobordism group
Yuta Nozaki, Kouki Sato, Masaki Taniguchi
For any and oriented homology 3-sphere , we introduce a homology cobordism invariant . The values are included in the cr…
A molecular diamond lattice antiferromagnet as a Dirac semimetal candidate
Yasuhiro Shimizu, Akihiro Otsuka, Mitsuhiko Maesato +6
The ground state of a molecular diamond-lattice compound (ET)Ag(CN) is investigated by the magnetization and nuclear magnetic resonance spectroscopy. We found that the syst…