We consider models of a scalar field coupled to quadratic $R\!+\!R^2$ gravity in the framework of the Palatini formulation. The resulting Einstein-frame generalized $k$-inflation effective theory is analyzed assuming that the constant-roll condition holds. We focus on a quartic self-interaction potential, a case of particular appeal modelling Higgs...
We present new constraints on anisotropic birefringence of the cosmic microwave background polarization using two seasons of data from the Atacama Cosmology Telescope covering $456$ square degrees of sky. The birefringence power spectrum, measured using a curved-sky quadratic estimator, is consistent with zero. Our results provide the tightest curr...
The curvature perturbations produced during an early era of inflation are known to have quasi-Gaussian distribution functions close to their maximum, where they are well constrained by measurements of the cosmic microwave background anisotropies and of the large-scale structures. In contrast, the tails of these distributions are poorly known, altho...
Published in Journal of Thoracic Disease
Background The accuracy of intraoperative pathological diagnosis of small-sized pulmonary nodules including ground-glass opacity (GGO) is important for the surgeon to choose a suitable surgical procedure. Diagnosis of the small-sized lesions of the lung by frozen section (FS) is very difficult for the pathologist because of limited FS technology. H...
Kyoto University (京都大学) / 0048 / 新制・課程博士 / 博士(理学) / 甲第22247号 / 理博第4561号 / 京都大学大学院理学研究科物理学・宇宙物理学専攻 / (主査)教授 畑 浩之, 教授 田中 貴浩, 教授 川合 光 / 学位規則第4条第1項該当
Our primary objective is to construct a plausible, unified model of inflation, dark energy and dark matter from a fundamental Lagrangian action first principle, wherein all fundamental ingredients are systematically dynamically generated starting from a very simple model of modified gravity interacting with a single scalar field employing the forma...
The existence of non-inclusive households significantly reduces the effect of the interest rate change policy on households inter-temporal consumption decisions. Further, financial inclusion is closely related to fintech. On the one hand, fintech helps overcome the financial inclusion problem because fintech manages to reach those who were previous...
We discuss the possibility that inflation is driven by supersymmetry breaking with the scalar component of the goldstino superfield (sgoldstino) playing the role of the inflaton and charged under a gauged U ( 1 ) R-symmetry. Imposing a linear superpotential allows us to satisfy easily the slow-roll conditions, avoiding the so-called &eta / -problem...
Published in Journal of High Energy Physics
It was recently shown that the homogeneous and isotropic cosmology of a massless scalar field coupled to general relativity exhibits a new hidden conformal invariance under Mobius transformation of the proper time, additionally to the invariance under time-reparamterization. The resulting Noether charges form a sl2ℝ\documentclass[12pt]{minimal} \us...
This study bridges the existing literature on the macroeconomic effects of policy-related uncertainty and the literature on inflation dynamics and provide fresh insights on the impacts of policy-related uncertainty under President Donald Trump -coming from unforeseen events and actions of decision makers- on unanticipated inflation changes. With th...
