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Search Results: 1 - 10 of 208989 matches for " Fedor L. "
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Inflaton mass in the nuMSM inflation
Anisimov, Alexey;Bartocci, Yannick;Bezrukov, Fedor L.
High Energy Physics - Phenomenology , 2008, DOI: 10.1016/j.physletb.2008.12.028
Abstract: We analyse the reheating in the modification of \nuMSM (Standard Model with three right handed neutrinos with masses below the electroweak scale) where the sterile neutrino providing the Dark Matter is generated in decays of the additional inflaton field. We deduce that due to rather inefficient transfer of energy from the inflaton to the Standard Model sector reheating tends to happen at very low temperature, thus providing strict bounds on the coupling between the inflaton and the Higgs particles. This in turn translates to the bound on the inflaton mass, which appears to be very light 0.1 GeV <~ m_I <~ 10 GeV, or slightly heavier then two Higgs masses 300 GeV <~ m_I <~ 1000 GeV.
Standard Model Higgs boson mass from inflation
Bezrukov, Fedor L.;Magnin, Amaury;Shaposhnikov, Mikhail
High Energy Physics - Phenomenology , 2008, DOI: 10.1016/j.physletb.2009.03.035
Abstract: We analyse one-loop radiative corrections to the inflationary potential in the theory, where inflation is driven by the Standard Model Higgs field. We show that inflation is possible provided the Higgs mass m_H lies in the interval m_min
State-Dependent Implication and Equivalence in Quantum Logic
Fedor Herbut
Advances in Mathematical Physics , 2012, DOI: 10.1155/2012/385341
Abstract: Ideal occurrence of an event (projector) leads to the known change of a state (density operator) into (the Lüders state). It is shown that two events and give the same Lüders state if and only if the equivalence relation is valid. This relation determines equivalence classes. The set of them and each class, are studied in detail. It is proved that the range projector of the Lüders state can be evaluated as , where denotes the greatest lower bound, and is the null projector of . State-dependent implication extends absolute implication (which, in turn, determines the entire structure of quantum logic). and are investigated in a closely related way to mutual benefit. Inherent in the preorder is the state-dependent equivalence , defining equivalence classes in a given Boolean subalgebra. The quotient set, in which the classes are the elements, has itself a partially ordered structure, and so has each class. In a complete Boolean subalgebra, both structures are complete lattices. Physical meanings are discussed. 1. Introduction The basic object of this study is the concept of a quantum-mechanical state (density operator) and its change when an event (projector) with positive probability occurs (the result is obtained) in ideal measurement. The terms “state” and “density operator” as well as “event,” and “projector” will be used interchangeably. As it is well known, ideal measurement is the simplest special case of measurement of the first kind (synonyms: predictive, repeatable, and nondemolition measurement). It causes a change of state according to the Lüders selective (or definite-result) formula See [1–3]. We call the Lüders state, and a state-determining projector (it is all meant with respect to the initially given state ). Usually one treats the special case of a pure-state . Then, as easily seen, (1.1) takes the simple form which is sometimes called the von Neumann-Lüders projection (it is actually a normalized projection). Von Neumann treated the even more special case when the event is elementary (an atom) [4]. The change of state then is The Lüders state was postulated by Lüders. It was derived by several authors including the present one [5, 6] (and the first derivation was repeated in different context in [7]; see also references in these articles). For a different approach, see references [8–10]. In Khrennikov?s terminology, one deals with the postulates of Lüders and von Neumann (and he carefully examines their effect on some foundational issues). As it was mentioned, in my view, ideal measurement is the simplest kind of measurement, and of
In Search of the Russian Dream: Suburbanization as an Alternative to Absurdity. A Schtick for Development В поисках русской мечты: субурбанизация как альтернатива абсурду. Фишка для развития
Fedor Kudryavtsev
Project Baikal , 2012,
Abstract:
Architekturzeichnungen hinduistischer Baukunst in Indien
Roth, Fedor
Archimaera , 2008,
Abstract: Fedor Roth - Künstler, Architekt und Architekturtheoretiker - stellt einen Ausschnitt aus seinen Architekturzeichnungen hinduistischer Baukunst vor. Das Medium der Zeichnung dient ihm in der impressionistischen Freude an Strukturen, Licht und Schatten als autonome Ann herung an das Sch ne in der Architektur jenseits einer rationalen Durchdringung und Einordnung der gezeichneten Objekte.
"Eat only potatoes, like the Irish": Siberia in 1890 and historical geography of images Как ирландцы, питаются одним картофелем : Сибирь 1890 года в исторической географии образов
Fedor Korandey
Cultural Geography & Geohumanities , 2012,
Abstract: The article examines the critical political metaphor, which intellectuals of the end of the XIX century used to define the place of the Siberia in the contemporary world order. They described the Siberian possessions of the Russian Empire using the analogy with Ireland. The metaphor had acquired special significance when George Kennan published accounts of “Siberian atrocities” which were committed by the Czar's government in Eastern Siberia in 1888-1889 (Kara tragedy etc.). The article deals with the analysis of narrative strategies and ideologies in the writings of George Kennan, Harry de Windt and Anton Chekhov. Статья посвящена характеристике Сибири при помощи сравнения с Ирландией, бытовавшей среди интеллектуальной элиты конца XIX в. Эта критическая политическая метафора приобрела особое значение в ходе общественной дискуссии, развернувшейся после публикации Дж. Кеннаном материалов о сибирских жестокостях царского правительства ( Карийская трагедия 1888-1889 г. и т.д.). В статье анализируются нарративные стратегии и идеология тюрьмоведческих сочинений Дж. Кеннана, Г. де Уиндта и А.П. Чехова
Some Aspects of the Economic-Industrial Cooperation in the Romanian-West German Relationships from the Second Half of the 20th Century
Lucian Fedor
Codrul Cosminului , 2010,
Abstract: When it started the controversial process of alienating our country from the Soviet Union’s directives in the second half of the 6th decade, Romania tried, among others, to build an independent national economy and to develop political-diplomatic and economic relationships with the developed western countries. At the beginning of the 6th decade, the Western-Germany looked, among other projects relating to the west European region, for the approach of the Eastern capitals and the cooperation with these ones. Within the bilateral relationships, Romania set out a clear series of objectives or economic initiatives (the industrial cooperation and the technical-scientific cooperation) and the Federal Germany intended to develop the commercial field and to put across cultural relationships. The first official instruments stating the economic cooperation between the two countries were represented by the Agreement for the technical-economic cooperation in August 1967 and by the Long term Agreement for the economic, industrial and technical collaboration in June 1973. The industrial production cooperation between S.R. of Romania and F.R. of Germany knew several forms – international sector bilateral specialization of production, co-production concept, co-production in the mixed companies, the loan, the work with equipments and machineries on credit payable in products.
Einige Gesichtspunkte der Handelsbeziehungen zwischen Sozialistischer Republik Rum nien und Bundesrepublik Deutschland (1960-1990)
Lucian Fedor
Codrul Cosminului , 2011,
Abstract: After the establishment of the first transactions of import and export from machines-building industry and food industry in the late 50’s, the economic and commercial relations between Socialist Romania and West Germany had a special evolution both at institutional and financial level in the 7-th and 8-th decades. The bilateral trade relations were characterized by structural asymmetry of the trade, long-term inequity interchange, Romanian exports dominated by products of light-industry and West-German exports dominated by heavy-industry products. The Federal Republic of Germany was for Romania the most important West European economic partner, with a decisive role in the industrialization and economic growth of our country in the 60’s and 70’s.
Critical Assessment of Wave-Particle Complementarity via Derivation from Quantum Mechanics
Fedor Herbut
Physics , 2009,
Abstract: After introducing sketchily Bohr's wave-particle complementarity principle in his own words, a derivation of an extended form of the principle from standard quantum mechanics is performed. Reality-evaluation of each step is given. The derived theory is applied to simple examples and the extended entities are illustrated in a thought experiment. Assessment of the approach of Bohr and of this article is taken up again with a rather negative conclusion as far as reflecting reality is concerned. The paper ends with selected incisive opinions on Bohr's dogmatic attitude and with some comments by the present author.
How to Distinguish Identical Particles. the General Case
Fedor Herbut
Physics , 2006,
Abstract: The many-identical-particle quantum correlations are revisited utilizing the machinery of basic group theory, especially that of the group of permutations. It is done with the purpose to obtain precise definitions of effective distinct particles, and of the limitations involved. Namely, certain restrictions allow one to distinguish identical particles in the general case of N of them, and of J clusters of effectively distinct particles, where N and J are arbitrary integers (but 1
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