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Topic: Brane cosmology

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	[ruv.net] Aggregated Creative Content: Brane World / String Theory
		Cosmology in a Brane Universe - This lecture presents the cosmological models with extra dimensions that have been recently elaborated, which assume that ordinary matter is confined on a surface, called brane, embedded in a higher dimensional spacetime.
		Branes for Relativists - The purpose of this manuscript is to provide a pedagogical account of the brane technology so that the relativists can use branes in their study.
		Introduction to Inflationary Cosmology - Introduction to cosmology and inflation by Scott Watson of Brown University.
	www.ruv.net /Brane_World___String_Theory.833.0.html (2934 words)

	Science - Physics - Cosmology - in TutorGig Directory
		Introduction to Inflationary Cosmology - Introduction to cosmology and inflation by Scott Watson of Brown University.
		A Review of Inflationary Cosmology - The aim of this lecture is to highlight two areas of recent progress in inflationary cosmology, namely reheating and the quantum theory of cosmological perturbations.
		String Cosmology - A lecture on aspects of superstring theory and cosmology.
	www.tutorgig.com /webdir/index.php/Science/Physics/Cosmology (1475 words)

	NationMaster - Encyclopedia: Branes (Site not responding. Last check: )
		P-branes or branes are terms from quantum superstring theory used to refer to membrane-like structures of one to eleven dimensions that arise in equations of this heavily mathematical theory.
		Branes are objects in M-theory and its offshoot, brane cosmology.
		In brane cosmology, the term "brane" is used to refer to objects similar to our four-dimensional universe, which move in a higher-dimensional "bulk".
	www.nationmaster.com /encyclopedia/Branes (252 words)

	Brane cosmology - (Site not responding. Last check: )
		Brane cosmology is a protoscience motivated by, but not rigorously derived from, superstring theory and M-theory.
		In the brane picture, the other three forces (electromagnetism and the weak and strong nuclear forces) are localised on the brane, but gravity has no such constraint and so much of its attractive power "leaks" into the bulk.
		The Randall-Sundrum, pre-big bang, ekpyrotic and cyclic scenarios are particular models of brane cosmology which have attracted a considerable amount of attention.
	www.gurgaongrid.com /mediawiki/index.php/Brane_cosmology (343 words)

	Brane cosmology - Definition, explanation
		Brane cosmology is a protoscience motivated by, but not rigorously derived from, superstring theory and M-theory.
		The idea is to solve problems in cosmology using speculative particle physics theories and in turn use cosmological observations to motivate ideas in string theory.
		In the brane picture, the other three forces (electromagnetism and the weak and strong nuclear forces) are localised on the brane, but gravity has no such constraint and so much of its attractive power "leaks" into the bulk.
	www.calsky.com /lexikon/en/txt/b/br/brane_cosmology.php (243 words)

	Spartanburg SC \| GoUpstate.com \| Spartanburg Herald-Journal (Site not responding. Last check: )
		Physical cosmology, as a branch of astrophysics, is the study of the large-scale structure of the universe and is concerned with fundamental questions about its formation and evolution.
		Physical cosmology, roughly speaking, deals with the very largest objects in the universe (galaxies, clusters and superclusters), the very earliest distinct objects to form (quasars) and the very early universe, when it was nearly homogeneous (hot big bang, cosmic inflation and the cosmic microwave background radiation).
		Cosmology is unusual in physics for drawing heavily on the work of particle physicists' experiments, and research into phenomenology and even string theory; from astrophysicists; from general relativity research; and from plasma physics.
	www.goupstate.com /apps/pbcs.dll/section?category=NEWS&template=wiki&text=physical_cosmology (2458 words)

	Edge: THEORIES OF THE BRANE
		Branes allow for an entirely new set of possibilities in the physics of extra dimensions, because particles confined to the brane would look more or less as they would in a three-plus-one-dimension world; they never venture beyond it.
		When the energy in space is correlated with the energy on the brane so that a large flat three-dimensional brane sits in the higher-dimensional space, the graviton (the particle communicating the gravitational force) is highly attracted to the brane.
		The aforementioned second brane appeared to serve two purposes: It explained the hierarchy problem because of the small probability for the graviton to be there, and it was also responsible for bounding the extra dimension so that at long distances (bigger than the dimension's size) only three dimensions are seen.
	www.edge.org /3rd_culture/randall03/randall03_print.html (4175 words)

	Branes :: Cosmology : Gourt (Site not responding. Last check: )
		In theoretical physics, branes or p-branes are spatially extended objects that appear in string theory and its relatives (M-theory and brane cosmology).
		Branes for Relativists - The purpose of this manuscript is to provide a pedagogical account of the brane technology so that the relativists can use branes in their study.
		Cosmology in a Brane Universe - This lecture presents the cosmological models with extra dimensions that have been recently elaborated, which assume that ordinary matter is confined on a surface, called brane, embedded in a higher dimensional spacetime.
	www.dejavu.org /cgi-bin/get.cgi?ver=93&url=http%3A%2F%2Fscience.gourt.com%2FPhysics%2FCosmology%2FBranes.html (525 words)

	Brane cosmology - Protoscience - a Wikia wiki
		Brane cosmology - Protoscience - a Wikia wiki
		The idea is to solve problems in cosmology using speculative particle physics theories and in turn use cosmological observations to motivate ideas in string theory.
		In the brane picture, the other three forces (electromagnetism and the weak and strong nuclear forces) are localised on the brane, but gravity has no such constraint and so much of its attractive power "leaks" into the bulk.
	protoscience.wikia.com /wiki/Brane_cosmology (376 words)

	Relativity Group: Cosmology
		A major goal of cosmology is to explain the present state of the universe in terms of processes that happened early on in its history.
		Cosmology is at an historic juncture because of this fruitful tension, with the new data providing important clues about the very early universe.
		Inspired by the realization that M-theory entails the existence of 'branes', surfaces of various dimensions to which matter is bound, a new area that may be described as 'braneworld cosmology' has opened up.
	www.damtp.cam.ac.uk /user/gr/research/cosmology.html (807 words)

	Cosmology ... The creation of MASS.
		The main problem in Cosmology is: where does MASS comes from, at the most fundamental level?
		To find that answer physicists try to find via large accelerators the Higgs boson which should be a spin-zero particle with nonzero mass.
		The basic 'difference' to all previous scientific approaches is that the Brane (and following sub-branes) is unbreakable.
	www.mu6.com (786 words)

	[No title]
		Pre-big-bang cosmology was an attempt to reconcile inflationary cosmology with superstring theory.
		With the recent advent of brane world cosmology, which was developed to solve the hierarchy problem and where the Universe is considered to be a giant D-brane, we now have to reconcile brane worlds with pre-big-bang cosmology.
		The rate of brane creation due to these quantum effects may be so fast as to balance the dilution of the brane density due to the expansion.
	www.geocities.com /jefferywinkler/braneworld.html (2285 words)

	Modern Cosmology Explained
		Brane lensing in the reverse direction can generate a similar appearance of odd definitions of locality where the reverse would hold true(1).
		Brane Cosmology deals with the same, but also goes a bit further in an attempt to explain not only what is outside of our Universe in what we termed hyperspace, but, also, where the Strings and membranes themselves come from.
		However, the constancy of the speed of light does have implications for Cosmology since certain prime aspects of our interpretation of observations are based upon the assumption that C is constant and that we can observationally compare frames.
	cosmology.bravehost.com /about.html (5352 words)

	Pearson Prentice Hall - Science News
		Many physicists are studying branes in the hope of linking gravity and the other fundamental forces of nature to the elementary particles that communicate these forces.
		Moreover, Linde claims that the branes in the ekpyrotic model are not truly uniform in structure and therefore can't account for the large-scale uniformity of the universe.
		Because the attractive force between branes is so small, they move at a snail's pace, and it could take an extraordinarily long time for a collision to occur, he says.
	www.phschool.com /science/science_news/articles/branes_collide.html (2486 words)

	brane - Search Results - MSN Encarta
		In theoretical physics, branes or p-branes are spatially extended objects that appear in string theory and its relatives (M-theory and brane cosmology).
		Brane cosmology refers to several theories in particle physics and cosmology motivated by, but not rigorously derived from, superstring theory and M-theory.
		BRANE SPACE LLC Brane Space LLC’s provides services and a platform enabling geographically...
	encarta.msn.com /brane.html (134 words)

	Google Directory - Science > Physics > Cosmology
		The aim of this lecture is to highlight two areas of recent progress in inflationary cosmology, namely reheating and the quantum theory of cosmological perturbations.
		The aim of this set of lectures is a systematic presentation of a 1+3 covariant approach to studying the geometry, dynamics, and observational properties of relativistic cosmological models.
		Introduction to cosmology and inflation by Scott Watson of Brown University.
	www.froogle.com /alpha/Top/Science/Physics/Cosmology (1130 words)

	Progress and Problems for Brane Gas Cosmology / 2004 / Events & Calendar / CITA (Site not responding. Last check: )
		Progress and Problems for Brane Gas Cosmology / 2004 / Events and Calendar / CITA
		Brane gas cosmology is an attempt to develop a new model for the very early Universe based on ideas from string theory.
		I will end with a discussion of key challenges for the brane gas cosmology program.
	www.cita.utoronto.ca /index.php/events_calendar/2004/progress_and_problems_for_brane_gas_cosmology (103 words)

	ipedia.com: Brane cosmology Article (Site not responding. Last check: )
		The model has the aim of allowing cosmologists to explore the possible ramifications of these theories about reality on the smallest scales for our picture of the universe on the largest scales.
		The central concept involves "unrolling" one or more of the compact dimensions of superstring theory to form a higher-dimensional medium, called the "bulk", in which our four-dimensional universe (one of a possibly large number of branes) lies embedded.
		The ekpyrotic model forms one extrapolation of brane cosmology which has attracted a considerable amount of attention.
	www.ipedia.com /brane_cosmology.html (301 words)

	The Beauty of Branes: Scientific American (Site not responding. Last check: )
		Branes are domains or swaths of several spatial dimensions within a higher-dimensional space.
		The everyday world we live in could be a three-brane, for example, and it is anyone's guess as to what dimension brane it might be embedded in.
		The fruits of that collaboration, as fueled by caffeine and ice cream as by heady equations, were papers known as RS-1 and RS-2, two of the most cited in physics for the past five years.
	www.sciam.com /article.cfm?chanID=sa006&colID=30&articleID=000EB657-C6C7-1331-841D83414B7FFE9F (853 words)

	Directory - Science: Physics: Cosmology: Branes
		Cosmology in a Brane Universe · This lecture presents the cosmological models with extra dimensions that have been recently elaborated, which assume that ordinary matter is confined on a surface, called brane, embedded in a higher dimensional spacetime.
		Brane Cosmology · The aim of these lectures is to give a brief introduction to brane cosmology
		Branes for Relativists · The purpose of this manuscript is to provide a pedagogical account of the brane technology so that the relativists can use branes in their study.
	www.incywincy.com /default?p=868131 (260 words)

	What is Brane cosmology? : Abaara fun facts and uncommon knowledge - Brane cosmology
		Brane cosmology is a protoscience motivated by, but not rigorously derived from, superstring theory and
		weak and strong nuclear forces) are localised on the brane, but gravity has no such constraint and so much of its attractive power "leaks" into the bulk.
		ekpyrotic and cyclic scenarios are particular models of brane cosmology which have attracted a considerable amount of attention.
	info.abaara.com /pac/Brane_cosmology (254 words)

	The search for extra dimensions (November 2000) - Physics World - PhysicsWeb
		The strengths of the gauge forces on a string-theory brane depend on the properties of the bulk.
		The existence of other parallel branes in the bulk is very natural, and indeed string theories typically require multiple sets of such branes.
		Finally, the most serious of all problems in particle physics and cosmology is the cosmological constant (see the article by Caldwell and Steinhardt, this issue).
	physicsweb.org /articles/world/13/11/9/2 (2427 words)

	Brane cosmology - Biocrawler (Site not responding. Last check: )
		The central idea is that our visible, four-dimensional universe is entirely restricted to a brane in a higher-dimensional space, called the bulk.
		Other branes may be moving through this bulk.
		An Introduction to Brane Cosmology (http://arxiv.org/abs/hep-th/0202044) (rather technical)
	www.biocrawler.com /encyclopedia/Brane_cosmology (249 words)

	What about string theory?
		The four space dimensions are bounded by two three-dimensional surfaces, or branes, separated by some distance R between the three-branes in the fourth direction.
		One of those three-branes, called the visible brane, can be seen as the three-dimensional world on which we live.
		In cosmology, the event horizon is like the particle horizon, except that it is in the future and not in the past.
	www.superstringtheory.com /cosmo/cosmo5a1.html (904 words)

	My Ontology
		Brane cosmology assumes that the visible universe lies on a four-dimensional brane which moves in higher dimensional space.
		Brane cosmology is a protoscience motivated by, but not rigorously derived from, superstring theory and M-theory.
		In the brane picture, the other three forces (electromagnetism and the weak and strong nuclear forces) are localised on the brane, but gravity has no such constraint and so much of its attractive power "leaks" into the bulk.
	www.geocities.com /monomorphic/quantum.html (2589 words)

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