Results 91 to 100 of about 9,790 (281)

Constraints on the scalar-field potential in warm inflation

, 2023
We quantify the degree of fine tuning required to achieve an observationally viable period of inflation in the strongly dissipative regime of warm inflation.
Freese, Katherine, Visinelli, Luca, Montefalcone, Gabriele, Aragam, Vikas, Freese, Katherine,   +4 more
core   +1 more source

Role of trans-Planckian modes in cosmology

Journal of High Energy Physics, 2020
Motivated by the old trans-Planckian (TP) problem of inflationary cosmology, it has been conjectured that any consistent effective field theory should keep TP modes ‘hidden’ behind the Hubble horizon, so as to prevent them from turning classical and ...
Arjun Berera, Suddhasattwa Brahma, Jaime R. Calderón   +2 more
doaj   +1 more source

Trans-Planckian effects in warm inflation [PDF]

Journal of Cosmology and Astroparticle Physics, 2019
We study the effect of a non-trivial vacuum prescription on warm inflation observables, namely the power spectrum of the comoving curvature perturbation. Non-trivial choice of vacuum, can provide information about trans-Planckian physics. Traditionally, the initial condition for inflation is chosen to be the usual Bunch-Davies vacuum.
Nezhad, H. Bouzari, Shojai, F.
openaire   +2 more sources

Alzheimer's Disease Co‐Pathology and Cognitive Impairment in Amyotrophic Lateral Sclerosis

Annals of Neurology, EarlyView.
Objectives Amyotrophic lateral sclerosis (ALS) and Alzheimer's disease (AD) share neuropathological features, including tau, amyloid, and TDP‐43 pathology. This study investigated whether AD‐related pathological changes are associated with cognitive impairment ALS. Methods Cerebrospinal fluid (CSF total‐tau, phosphorylated‐tau, beta‐amyloid) and plasma
Elisabeth Kasper, Annaliis Lehto, Alexandra Jürs, Nina Nordmann, Oliver Peters, Julian Hellmann, Josef Priller, Eike Jakob Spruth, Gabor C. Petzold, Ina Voigt, Patrick Weydt, Sarah Bernsen, Elisabeth Dinter, Björn Falkenburger, René Günther, Emrah Düzel, Wenzel Glanz, Matthis Synofzik, Lukas Beichert, Annika Spottke, Michael Wagner, Frederic Brosseron, Matthias C. Schmid, Annett Halle, Jochen Herms, Anja Schneider, Stefan Teipel, Johannes Prudlo, Manuela Neumann, Andreas Hermann   +29 more
wiley   +1 more source

Constraint on the Higgs-Dilaton Potential via Warm Inflation in Two-Time Physics

Advances in High Energy Physics, 2022
Within the SP2,R symmetry, the two-time model (2T model) has six dimensions with two dimensions of time and the dilaton field that can be identified as inflaton in a warm inflation scenario with potential of the form ~ϕ4.
Vo Quoc Phong, Ngo Phuc Duc Loc
doaj   +1 more source

Simulating competition in the US bioeconomy to produce hard‐to‐electrify transportation fuels using limited biomass resources

Biofuels, Bioproducts and Biorefining, EarlyView.
Abstract This study presents a novel bioeconomy optimization framework, BiOpt, designed to address critical questions regarding the strategic use of limited US biomass resources for biofuel production. By integrating detailed techno‐economic analyses, life cycle assessments, and resource assessment data, BiOpt optimizes resource distributions across ...
Nicholas A. Carlson, Emily K. Newes, Kristen Lu, Eric C. D. Tan   +3 more
wiley   +1 more source

Constraining warm inflation with CMB data [PDF]

Journal of Cosmology and Astroparticle Physics, 2018
We confront the warm inflation observational predictions directly with the latest CMB data. We focus on a linear temperature (T) dissipative coefficient combined with the simplest model of inflation, a quartic chaotic potential. Although excluded in its standard cold inflation version, dissipation reduces the tensor-to-scalar ratio and brings the ...
Bastero-Gil, Mar, Bhattacharya, Sukannya, Dutta, Koushik, Gangopadhyay, Mayukh Raj   +3 more
openaire   +2 more sources

Constant-roll warm inflation within Rastall gravity

Nuclear Physics B
This research paper used a newly proposed strategy for finding the exact inflationary solutions to the Friedman equations in the context of Rastall theory of gravity (RTG), which is known as constant-roll warm inflation (CRWI).
Rabia Saleem, Iqra Shahid, M. Israr Aslam, Abdul Wahab   +3 more
doaj   +1 more source

National Environmental Policies and Corporate Green Innovation: The Mirroring Versus Substitution Hypotheses

Business Strategy and the Environment, EarlyView.
ABSTRACT Drawing on comparative institutional theory, we study the nature and magnitude of the effects of national environmental policies on corporate green innovation in developed versus emerging markets. Using a sample of 1831 listed firms in 34 countries from 2002 to 2020, we find that national environmental policies increase corporate green ...
Ivan Miroshnychenko, Knut Haanaes, Julia Binder   +2 more
wiley   +1 more source

Temperature in warm inflation in non-minimal kinetic coupling model [PDF]

, 2015
Warm inflation in the non-minimal derivative coupling model with a general dissipative coefficient is considered. We investigate the conditions for the existence of the slow roll approximation and study cosmological perturbations.
H. Mohseni Sadjadi, Parviz Goodarzi
core   +1 more source