نتایج جستجو برای: explaining this matter

تعداد نتایج: 6252703  

Journal: :Journal of Modern Physics 2023

A new model of the modified Newtonian gravity called Compacted & Collapsing Gravity (CCG) is proposed. Similar to Milgrom’s MOND, it allows explaining flattening rotation curve in spiral galaxies, thus eliminates need for dark matter at this level. However, contrast puts a distinct limit on effective gravity; thereby constraints sizes single galaxies connection their masses, which complies with...

Journal: :Journal of Physics A 2022

Abstract The presence and significance of active topological defects is increasingly realised in diverse biological biomimetic systems. We introduce a continuum model polar matter, based on conservation laws symmetry arguments, that recapitulates both apolar (nematic) features turbulence. Using numerical simulations the model, we demonstrate emergence half- full-integer matter. Interestingly, f...

Journal: :Archives of disease in childhood - Education & practice edition 2020

2001
R Foot

Mirror matter is predicted to exist if parity (i.e. left-right symmetry) is a symmetry of nature. Remarkably mirror matter is capable of simply explaining a large number of contemporary puzzles in astrophysics and particle physics including: Explanation of the MACHO gravita-tional microlensing events, the existence of close-in extrasolar gas giant planets, apparently 'isolated' planets, the sol...

2006
Kanchan Chandra

Since the publication of Donald Horowitz’s Ethnic Groups in Conflict, there has been an increasing convergence on the classification of ethnic identities among comparative political scientists. But there is no agreement on the definition that justifies this classification – and the definitions that individual scholars propose do not match their classifications. This article proposes a definitio...

2013
Maria Emilia Maietti Giovanni Sambin

We give arguments explaining why, when adopting a minimalist approach to constructive mathematics as that formalized in our two-level minimalist foundation, the choice for a pointfree approach to topology is not just a matter of convenience or mathematical elegance, but becomes compulsory. The main reason is that in our foundation real numbers, either as Dedekind cuts or as Cauchy sequences, do...

1998
SVEN STEINMO CAROLINE J. TOLBERT

New institutionalism has emerged as one of the most prominent research agendas in the field of comparative politics, political economy, and public policy. This article examines the role of institutional variation in political/economic regimes in shaping tax burdens in industrialized democracies. An institutionalist model for tax policy variation is tested across the Organization for Economic Co...

2005
Boris Kayser

Thanks to compelling evidence that neutrinos can change flavor, we now know that they have nonzero masses, and that leptons mix. In these lectures, we explain the physics of neutrino flavor change, both in vacuum and in matter. Then, we describe what the flavor-change data have taught us about neutrinos. Finally, we consider some of the questions raised by the discovery of neutrino mass, explai...

2008
R. P. Woodard

We explore nonlocally modified models of gravity, inspired by quantum loop corrections, as a mechanism for explaining current cosmic acceleration. These theories enjoy two major advantages: they allow a delayed response to cosmic events, here the transition from radiation to matter dominance, and they avoid the usual fine tuning; instead, emulating Dirac’s dictum, the required large numbers com...

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