Kavli Affiliate: Misao Sasaki | Summary:Evaporating black holes can leave distinct imprints on gravitational wave (GW) backgrounds. We show that black hole populations with finite width mass distributions exhibit a universal late time evolution governed by the evaporation dynamics rather than the details of the initial mass distribution, leading to a characteristic power law suppression […]
Kavli Affiliate: Todor Milanov | Summary:We prove that the Gromov–Witten invariants of the elliptic orbifold lines $mathbfP^1_3,3,3$, $mathbfP^1_2,4,4$, and $mathbfP^1_2,3,6$ satisfy a certain system of Hirota Quadratic (or Bilinear) Equations. Our result is the analogue of the so-called Toda conjecture in the Gromov-Witten theory of $mathbfP^1$ or more precisely its non-extended version. A new feature […]
Kavli Affiliate: Hitoshi Murayama | Summary:We point out that ultra-peripheral Au+Au collision data collected at the Relativistic Heavy Ion Collider, operational during 2000-2026, can be used to search for axion-like particles coupled to photons via the resonant process $γγto a to γγ$. Exploiting the $Z^4$ enhancement of the two-photon luminosity in heavy-ion collisions and the […]
Kavli Affiliate: Eiichiro Komatsu | Summary:The Hobby-Eberly Telescope Dark Energy Experiment (HETDEX) is a wide-field, integral-field spectroscopic survey designed to map the large-scale distribution of Lyman-alpha emitting galaxies (LAEs) at 1.88 < z < 3.52 and constrain dark energy at cosmic noon. Using the 10-m Hobby-Eberly Telescope and the Visible Integral-Field Replicable Unit (IFU) Spectrograph, […]
Kavli Affiliate: Misao Sasaki | Summary:In gravitational physics, matter does not merely move within spacetime; it also determines the light cones that define causal relations. What happens when the matter that determines these light cones is itself in a quantum state? We address this question in a controlled low-energy setting: a massless scalar field propagating […]
Kavli Affiliate: Naoki Yasuda | Summary:IceCube has been detecting cosmic high-energy neutrinos for more than 10 years, but their major sources are still under debate. To identify them, IceCube is issuing neutrino alerts, which enable us to perform electromagnetic follow-up observations. In this paper, we present our Subaru/HSC deep optical follow-up observations down to 25.5 […]
Kavli Affiliate: Masahiro Kawasaki | Summary:Axion dark matter in high-scale inflation is subject to the isocurvature constraint, since quantum fluctuations of the axion field during inflation may exceed the current CMB bound. One conventional way to suppress these fluctuations is to assume that the Peccei-Quinn field has a large expectation value during inflation. However, this […]
Kavli Affiliate: Yukinobu Toda | Summary:We give a systematic construction of semiorthogonal decompositions of derived categories of coherent sheaves on quasi-smooth derived algebraic stacks over $mathbbC$, where the summands are subcategories defined by weight conditions, and the inclusion functors are given by parabolic induction. The summands are indexed by the component lattice of the stack, […]
Kavli Affiliate: John Silverman | Summary:We present ALMA Band 7 dust continuum observations of 57 massive ($M_ast gtrsim 10^10.8~M_odot$) star-forming galaxies at $1.45<z<1.70$, selected from the FMOS-COSMOS survey to provide a homogeneous sample near the main sequence (MS) at cosmic noon. The observations are sufficiently deep to yield $>3σ$ detections for 55 galaxies. Combining the […]
Kavli Affiliate: Masahiro Takada | Summary:Accurate estimation of the covariance matrix of cosmic shear statistics is essential for cosmological analyses using current and upcoming wide-area weak lensing surveys. In this work, we investigate analytical methods for computing the Gaussian covariance matrix of the cosmic shear two-point correlation function (2PCF), taking into account the effects of […]