نتایج جستجو برای: preheating temperature

تعداد نتایج: 453858  

Journal: :Physical review 2023

We use Instant Preheating as a mechanism to reheat the universe when its evolution is modeled by non-oscillating background. Once we obtain reheating temperature, calculate number of e-folds using two different methods, which allows us establish relationship between temperature and spectral index scalar perturbations. explore this connection constrain for Quintessential Inflation models.

2009
Anna KAMIŃSKA

Motivated by a recent discussion about the role of flat directions, a typical feature of supersymmetric models, in the process of particle production in the early universe a consistent model of inflation and preheating in supergravity with MSSM fields has been built. It is based on a model proposed by M. Kawasaki, M. Yamaguchi and T. Yanagida. In the inflationary stage, the flat directions acqu...

Journal: :Thermal Science 2023

Under the current requirements of environmental protection, carbon peaking and neutrality goals, capacity new energy interconnection network is increasing day by day. The thermal power unit requires ability rapid load adjustment to meet real-time balance. However, when in a variable condition, denitrification system inefficient or even inoperable. nitrogen oxide emission large, which makes it d...

Journal: :Journal of High Energy Physics 2021

In traditional models only an order one fraction of energy is transferred from the inflaton to radiation through nonperturbative resonance production in preheating immediately after inflation, due backreaction effects. We propose a particle mechanism that could improve depletion density by up four orders magnitude. The improvement comes fast perturbative decays resonantly produced daughter part...

2009
ANNA KAMIŃSKA

Motivated by a recent discussion about the role of flat directions, a typical feature of supersymmetric models, in the process of particle production in the early universe a consistent model of inflation and preheating in supergravity with MSSM fields has been built. It is based on a model proposed by M. Kawasaki, M. Yamaguchi and T. Yanagida. In the inflationary stage, the flat directions acqu...

Journal: :Ophthalmic surgery 1984
L H Bloom H G Scheie M Yanoff

Preheating local anesthetic agents used for retrobulbar and facial nerve injection greatly decreases patient discomfort.

2013
Malgorzata Olek Jerzy Baron Witold Zukowski

UNLABELLED BACKGROUND The process of thermal decomposition of dichloromethane (DCM) and chlorobenzene (MCB) during the combustion in an inert, bubbling fluidized bed, supported by LPG as auxiliary fuel, have been studied. The concentration profiles of C6H5CI, CH2Cl2, CO2, CO, NOx, COCl2, CHCl3, CH3Cl, C2H2, C6H6, CH4 in the flue gases were specified versus mean bed temperature. RESULTS The...

2013
Mukesh Kumar Onkar Singh

Biodiesel will play an increasing role in fulfilling the world’s energy requirement. The world has experienced negative effect from the fossil fuel such as global warming and acid rain etc. With the increase in consumption of biodiesel, its impact on environment has raised a discussion around the world. Energy requirement of the world will increase in coming future and is projected to increase ...

2009
A. J. Birnbaum Ui-Jin Chung X. Huang James S. Im A. G. Ramirez Y. L. Yao

Amorphous sputter-deposited NiTi thin films were subjected to pulsed, melt-mediated laser crystallization techniques to engineer their microstructure. The effects of laser processing of preheated films are examined. Laser processing of films at an elevated substrate temperature has a significant effect on the rate with which solidification occurs. It is observed that the preheating temperature ...

2002
S. Peng Oh Andrew J. Benson

Both preheating of the intergalactic medium and radiative cooling of low entropy gas have been proposed to explain the deviation from self-similarity in the cluster LX−TX relation and the observed entropy floor in these systems. However, severe overcooling of gas in groups is necessary for radiative cooling alone to explain the observations. Non-gravitational entropy injection must therefore st...

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