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We analyze the signatures of inflationary models that are coupled to strongly interacting field theories, a basic class of multifield models also motivated by their role in providing dynamically small scales. Near the squeezed limit of the…

高能物理 - 理论 · 物理学 2015-06-12 Daniel Green , Matthew Lewandowski , Leonardo Senatore , Eva Silverstein , Matias Zaldarriaga

We continue the study of inflationary fluctuations in Holographic Space Time models of inflation. We argue that the holographic theory of inflation provides a physical context for what is often called dS/CFT. The holographic theory is a…

高能物理 - 理论 · 物理学 2013-06-19 Tom Banks , Willy Fischler , T. J. Torres , Carroll L. Wainwright

We study electronic transport through a strongly interacting quantum dot by using the finite temperature extension of Wilson's numerical renormalization group (NRG) method. This allows the linear conductance to be calculated at all…

强关联电子 · 物理学 2007-05-23 T. A. Costi

We compute the covariant three-point function near horizon-crossing for a system of slowly-rolling scalar fields during an inflationary epoch, allowing for an arbitrary field-space metric. We show explicitly how to compute its subsequent…

宇宙学与河外天体物理 · 物理学 2014-03-10 Joseph Elliston , David Seery , Reza Tavakol

Conformal prediction (CP) quantifies the uncertainty of machine learning models by constructing sets of plausible outputs. These sets are constructed by leveraging a so-called conformity score, a quantity computed using the input point of…

机器学习 · 统计学 2025-02-07 Michal Klein , Louis Bethune , Eugene Ndiaye , Marco Cuturi

We compute the three point correlation functions for primordial scalar and tensor fluctuations in single field inflationary models. We obtain explicit expressions in the slow roll limit where the answer is given terms of the two usual slow…

天体物理学 · 物理学 2009-11-07 Juan Maldacena

Solid inflation is a cosmological model where inflation is driven by fields which enter the Lagrangian in the same way as body coordinates of a solid matter enter the equation of state, spontaneously breaking spatial translational and…

广义相对论与量子宇宙学 · 物理学 2019-03-18 Peter Mészáros

The flexible profile approach proposed earlier to create CTM (compact or reduced order thermal models) is extended to cover the area of conjugate heat transfer. The flexible profile approach is a methodology that allows building a highly…

综合物理 · 物理学 2008-01-08 M. -N. Sabry

SporTran is a Python utility designed to estimate generic transport coefficients in extended systems, based on the Green-Kubo theory of linear response and the recently introduced cepstral analysis of the current time series generated by…

计算物理 · 物理学 2022-08-17 Loris Ercole , Riccardo Bertossa , Sebastiano Bisacchi , Stefano Baroni

We study inflection point inflation using Singularity Theory, which relates degenerate critical points of functions to their local behavior. This approach illuminates universal features of small-field models and gives analytic control over…

高能物理 - 理论 · 物理学 2011-09-28 Sean Downes , Bhaskar Dutta , Kuver Sinha

Cosmological correlation functions contain valuable information about the primordial Universe, with possible signatures of new massive particles at very high energies. Recent developments, including the cosmological bootstrap, bring new…

高能物理 - 理论 · 物理学 2022-12-12 Guilherme L. Pimentel , Dong-Gang Wang

Inflation is an early period of accelerated cosmic expansion, thought to be sourced by high energy physics. A key task today is to use the influx of increasingly precise observational data to constrain the plethora of inflationary models…

宇宙学与河外天体物理 · 物理学 2013-08-05 Joseph Elliston

In inflationary models where the source of scalar perturbations is not the inflaton, but one or more scalars with negligible coupling with the inflaton, the resulting perturbations are not only scale invariant, but fully conformally…

高能物理 - 理论 · 物理学 2013-05-30 Paolo Creminelli

A framework of inflation is formulated based on symmetry groups and their associated automorphic functions. In this setting the inflaton multiplet takes values in a curved target space constructed from a continuous group $G$ and a discrete…

高能物理 - 理论 · 物理学 2016-07-12 Rolf Schimmrigk

The evolution of high order correlation functions of a test scalar field in arbitrary inflationary backgrounds is computed. Whenever possible, exact results are derived from quantum field theory calculations. Taking advantage of the fact…

宇宙学与河外天体物理 · 物理学 2011-03-18 Francis Bernardeau

We introduce the software blocks_3d for computing four-point conformal blocks of operators with arbitrary Lorentz representations in 3d CFTs. It uses Zamolodchikov-like recursion relations to numerically compute derivatives of blocks around…

高能物理 - 理论 · 物理学 2021-11-24 Rajeev S. Erramilli , Luca V. Iliesiu , Petr Kravchuk , Walter Landry , David Poland , David Simmons-Duffin

Transport generates a large and growing component of global greenhouse gas emissions contributing to climate change. Effective transport emissions reduction policies are needed in order to reach a climate target well below 2$^\circ$C.…

物理与社会 · 物理学 2018-06-29 J. -F. Mercure , A. Lam , S. Billington , H. Pollitt

A C++ software design is presented that can be used to interpolate data in any number of dimensions. The design is based on a combination of templates of functional collections of elements and so-called type lists. The design allows for…

数学软件 · 计算机科学 2019-07-08 Maarten de Jong

I explore properties of the inflationary flow equations. I show that the flow equations do not correspond directly to inflationary dynamics. Nevertheless, they can be used as a rather complicated algorithm for generating inflationary…

天体物理学 · 物理学 2009-11-10 Andrew R Liddle

In this paper, we present an open-source, automated, and multi-faceted computational-statistical platform to obtain synthetic homogeneous isotropic turbulent flow and passive scalar transport. A parallel implementation of the well-known…

流体动力学 · 物理学 2020-12-10 Ali Akhavan-Safaei , Mohsen Zayernouri