Intersection cohomology groups of instanton moduli spaces and cotangent bundles of affine flag varieties

Posted by klaurent Tokyo

Kavli Affiliate: Hiraku Nakajima | First 5 Authors: Hiraku Nakajima, , , , | Summary: This is an abstract for my talk at the 68th Geometry Symposium on August 31, 2021. It is based on my joint work in progress with Dinakar Muthiah: a conjectural characterization of the equivariant costalk of the intersection cohomology complex […]


Continue.. Intersection cohomology groups of instanton moduli spaces and cotangent bundles of affine flag varieties

Precise measurement of the $D^+_s$ lifetime at Belle II

Posted by dbos Tokyo

Kavli Affiliate: T. Higuchi | First 5 Authors: Belle II Collaboration, I. Adachi, L. Aggarwal, H. Aihara, N. Akopov | Summary: We measure the lifetime of the $D_s^+$ meson using a data sample of 207 fb$^{-1}$ collected by the Belle II experiment running at the SuperKEKB asymmetric-energy $e^+ e^-$ collider. The lifetime is determined by […]


Continue.. Precise measurement of the $D^+_s$ lifetime at Belle II

Highly asymmetric probability distribution from a finite-width upward step during inflation

Posted by dbos Tokyo

Kavli Affiliate: Misao Sasaki | First 5 Authors: Ryodai Kawaguchi, Tomohiro Fujita, Misao Sasaki, , | Summary: We study a single-field inflation model in which the inflaton potential has an upward step between two slow-roll regimes by taking into account the finite width of the step. We calculate the probability distribution function (PDF) of the […]


Continue.. Highly asymmetric probability distribution from a finite-width upward step during inflation

Gravitational lensing effect on cosmic birefringence

Posted by klaurent Tokyo

Kavli Affiliate: Toshiya Namikawa | First 5 Authors: Fumihiro Naokawa, Toshiya Namikawa, , , | Summary: We calculate the effect of gravitational lensing on the parity-odd power spectrum of the cosmic microwave background (CMB) polarization induced by axionlike particles (ALPs). Several recent works have reported a tantalizing hint of cosmic birefringence, a rotation of the […]


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Clustering of Primordial Black Holes from QCD Axion Bubbles

Posted by klaurent Tokyo

Kavli Affiliate: Masahiro Kawasaki | First 5 Authors: Kentaro Kasai, Masahiro Kawasaki, Naoya Kitajima, Kai Murai, Shunsuke Neda | Summary: We study the clustering of primordial black holes (PBHs) and axion miniclusters produced in the model proposed to explain the LIGO/Virgo events or the seeds of the supermassive black holes (SMBHs) in arXiv:2006.13137. It is […]


Continue.. Clustering of Primordial Black Holes from QCD Axion Bubbles

Clustering of Primordial Black Holes from QCD Axion Bubbles

Posted by klaurent Tokyo

Kavli Affiliate: Masahiro Kawasaki | First 5 Authors: Kentaro Kasai, Masahiro Kawasaki, Naoya Kitajima, Kai Murai, Shunsuke Neda | Summary: We study the clustering of primordial black holes (PBHs) and axion miniclusters produced in the model proposed to explain the LIGO/Virgo events or the seeds of the supermassive black holes (SMBHs) in arXiv:2006.13137. It is […]


Continue.. Clustering of Primordial Black Holes from QCD Axion Bubbles