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Topic: Chiral condensate

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	QCD vacuum - Wikipedia, the free encyclopedia
		It is an example of a non-perturbative vacuum state, characterized by many non-vanishing condensates such as the gluon condensate or the quark condensate.
		) chiral flavour symmetry of the QCD Lagrangian is broken in the vacuum state of the theory.
		Prototypically, the baryon number of the chiral bag remains an integer, independent of bag radius: the exterior baryon number is identified with the topological winding number density of the Skyrme soliton, while the interior baryon number consists of the valence quarks (totaling to one) plus the spectral asymmetry of the quark eigenstates in the bag.
	en.wikipedia.org /wiki/QCD_vacuum (1877 words)

	Fermionic condensate - Wikipedia, the free encyclopedia
		The earliest recognized fermionic condensate described the state of electrons in a superconductor; the physics of other examples including recent work with fermionic atoms is analogous.
		A chiral condensate is an example of a fermionic condensate that appears in theories of massless fermions with chiral symmetry breaking.
		The primary difference between superfluid helium and a Bose-Einstein condensate is that the former is condensed from a liquid while the latter is condensed from a gas.
	en.wikipedia.org /wiki/Fermion_condensate (987 words)

	NERSC 2000 Annual Report: Science Highlights: High Energy and Nuclear Physics
		We plan to study chiral condensate, decay constants, hadron and quark masses, chiral logs, nucleon form factors, and the sea quark contributions, such as the strangeness content in the nucleon.
		We have implemented Neuberger's overlap fermion to test chiral symmetry and scaling via the calculation of hadron masses, quark masses, and the chiral condensate.
		Chiral symmetry is a fundamental symmetry in QCD that governs low-energy hadron structure and dynamics.
	www.nersc.gov /news/annual_reports/annrep00/sh_HENP_04.html (632 words)

	[No title]
		Spontaneous breaking of chiral $SU(N_f)$ symmetry is expected to arise as a consequence of confinement or as an instanton effect \cite{CDG,evs}, but it is not clear which mechanism drives chiral symmetry breaking.
		Chiral symmetry breaking effects of confining forces have been discussed in \cite{BC,corn}, and it has been pointed out that in dual QCD monopole condensation not only yields confinement but also a chiral condensate through a gap equation \cite{BBZ}.
		Dynamical breaking of chiral flavor symmetry in gauge theories is a puzzle, because it is very different from spontaneous magnetization: In a ferromagnet the interaction tends to align the dipoles, while thermal fluctuations restore disorder if the system has enough energy.
	www.ma.utexas.edu /mp_arc/papers/96-450 (2131 words)

	Iniziativa PG12
		Tachion condensation in the D-brane system induces a transition from an effective conformal field theory with central charge c=2 to a superconformal N=2 theory with central charge c=3/2; it would be interesting if this transition may be observed in the tunneling experiment of Greison et al..
		We found also that the spectrum and the chiral condensate of 1+1 dimensional strongly coupled gauge theories are determined from the knowledge of the spin correlators of the corresponding antiferromagnetic models.
		Our lattice computation lead to conjecture that the chiral condensate of 2D QCD is given by the chiral condensate of the Schwinger model multiplied by a term which depends only on the number of colors.
	www.ge.infn.it /com4/summaries/PG12.html (2196 words)

	Disoriented Chiral Condensate
		Bjorken and McLerran proposed that quasi-stable large chiral domains may be formed in high energy reactions, where pion fields take non-vanishing expectation values and could be the source of pions in such events.
		This can be seen as if the direction of the chiral condensate in such a domain were rotated from its vacuum configuration (Figure 1(a)) to a different one in chiral space (Figure 1(b)).
		In [27][28] we showed however that in the presence of classical fluctuations of the fields, the effective potential is modified from the zero temperature one and that chiral symmetry can be either broken or restored depending on the magnitude of those fluctuations.
	www-cunuke.phys.columbia.edu /PROGRESS/subsubsection3_3_4_1.html (717 words)

	THEORY INSTITUTE - Titles and Abstracts
		Deconfinement and chiral symmetry restoration are explored in a Dyson-Schwinger equation model of two-flavor QCD at finite temperature.
		Mapping between mean-field chiral Lagrangian theory and Landau Fermi-liquid fixed point theory leads to some remarkable relations between the quantities that figure in low-energy nuclear spectroscopic properties (such as orbital gyromagnetic ratios, giant dipole resonances) and the behavior of strange and non-strange hadrons in hot and dense medium as probed in relativistic heavy-ion collisions.
		In the chiral limit, the relaxation of a chiral symmetrical phase could lead to a disoriented chiral condensate with nonvanishing values in the pion direction.
	theorie3.physik.uni-erlangen.de /~smekal/97.TIAbstracts.html (2554 words)

	Honours Projects in Theoretical Physics - 2003
		In a beautiful paper, Banks and Casher showed that this ``chiral condensate'' can be related to the properties of the low-lying spectrum of quarks in the background gluon field.
		This project reviews the mechanisms by which the chiral condensate can be formed within the context of the Banks-Casher relation and how these relate to the underlying non-trivial vacuum structure of gluons in QCD.
		One of the fundamental symmetry properties of massless QCD is chiral symmetry.
	www.physics.adelaide.edu.au /new/HonoursProj/CSSMhonours.html (2684 words)

	Physics Papers
		In the dilute instanton gas model of the QCD vacuum, one expects a strong spatial correlation between chirality and the maxima of the Dirac eigenvectors with small eigenvalues.
		Further, the desired chiral properties are seen for the chiral condensate, suggesting that the domain wall fermion formulation may be an effective approach for the numerical study of QCD at finite temperature.
		However, as $N_t$ increases to 16, the chiral symmetry properties of the weak-coupling side of the zero-temperature transition are unclear and offer a hint of a normal, finite-temperature, chiral symmetry breaking transition in the weak-coupling phase.
	phys.columbia.edu /~cqft/physics_papers.htm (1894 words)

	Beckett Condensate Pumps (Site not responding. Last check: 2007-10-23)
		The first such condensate was produced by Eric Cornell and Carl Wiema 3: ther evaporation, leaving a sample of nearly pure condensate.
		The peak is not infinitely narrow because of the 7: 4 is not commonly referred to as a "Bose-Einstein condensate " because it is a liquid rather than a gas, which 9: chanical interference between two different condensate s.
		Fermion condensate 1: ch is broken because the quark s form a chiral condensate because of a pool of instanton s.
	www.daikaiju.com /edge/5390-beckettcondensatepumps.html (753 words)

	No Title (Site not responding. Last check: 2007-10-23)
		The order of the chiral restoration phase transition in QCD is currently unknown.
		If the transition is nearly second order, Rajagopal and Wilczek (RandW) have speculated that the nonequilibrium dynamics of a heavy ion system can generate metastable domains in which the chiral condensate is disoriented.
		Whether or not experiments can resolve these domains of disoriented chiral condensate (dcc) critically depends on their size and energy content.
	thy.phy.bnl.gov /~sean/dcc1/dcc1.html (298 words)

	Robert D. Pisarski: Curriculum Vitae
		Chirally symmetric vector mesons in the quark-gluon plasma, Phys.
		Chiral mishmash, at The quark, the plasma, and beyond, University of Bielefeld, Bielefeld, Germany, May 17 and 18, 1996.
		Applications of chiral symmetry, in ``Proceedings of the Workshop on finite temperature QCD and quark-gluon transport theory,'' edited by L. Lianshou, W. Enke, and Z. Xiaofei (Huazhong Normal University Press, Wuhan, 1996) Wuhan University, Wuhan, People's Republic of China, April, 1994.
	quark.phy.bnl.gov /~pisarski/vitae.html (2417 words)

	Brazilian Journal of Physics - Spinodal instability in the quark-gluon plasma (Site not responding. Last check: 2007-10-23)
		We investigate the onset of spinodal decomposition in a relativistic fluid of quarks coupled to a nonequilibrium chiral condensate.
		As a phenomenological model to mimic the case of the QGP, we use a relativistic plasma of quarks coupled to a chiral field.
		Equation (5) is the relativistic Euler equation for the quark fluid in the presence of the chiral field.
	www.scielo.br /scielo.php?script=sci_arttext&pid=S0103-97332004000200037&lng=pt&nrm=iso (1374 words)

	[No title] (Site not responding. Last check: 2007-10-23)
		SPECTRAL DENSITY ANALYSIS OF THE CHIRAL TRANSITION IN $n_f=4$ FINITE TEMPERATURE QCD N.A. Alves, B.A. Berg, D.W. Duke, A. Irb\"ack and S. Sanielevici Abstract: We apply the spectral density reweighting technique to the analysis of the chiral phase transition in finite-temperature lattice quantum chromodynamics (QCD) with four flavors of dynamical staggered fermions and $m_qa=0.025$.
		We calculate partition function zeros, as well as the maxima of the specific heat and of the susceptibilities for the Polyakov loop and for the chiral condensate.
		A finite size scaling analysis of these data leads to preliminary results for the critical coupling $\beta_c$, for the critical exponent $\nu$, and for the jumps in the Polyakov loop and in the chiral condensate.
	www.thep.lu.se /pub/Preprints/92/ai_92_3.ab (136 words)

	Paradoxes Resolved, Origins Illuminated - Wave-particle duality
		One such thought is that the whole issue of Relativity (velocity of light), electron orbit jumping, tunneling and particle entanglement, are all functions of the Chiral Condensate.
		In that the Chiral Condensate appears to be some form of super-solid, one can see that if I have a steel rod so dense that it doesnot tolerate compression waves, when I push one end the other end of the rod moves at the same instant, even if it is 1,000,000,000 ly away.
		Such that when you move relative to the source of the energy your velocity is additive or subtractive from the background condensate and you view the light at a new location where collectively the process equals the required v = c.
	www.metaresearch.org /msgboard/topic.asp?TOPIC_ID=167 (1605 words)

	Formation of disoriented chiral condensates in relativistic heavy-ion collisions (Site not responding. Last check: 2007-10-23)
		We present a brief review of the subject of disoriented chiral condensates (DCC).
		Our arguments suggest that formation of such large DCC is unlikely in the collision of heavy nuclei, and ultra-high energy hadronic collisions may be better suited for this.
		Disoriented chiral condensate; pion condensate; quark-gluon plasma; thermal fluctuations.
	www.ias.ac.in /pramana/julaug2000/wp2.htm (135 words)

	[No title] (Site not responding. Last check: 2007-10-23)
		Wavelet Perspective of the Disoriented Chiral Condensate (DCC) (with Z. Huang, R. Thews and X. Wang); selected publications related to this topic: Z.
		Disoriented Chiral Condensate (DCC) is a medium where Psi is coherently misaligned.
		the chiral condensate points in different direction from that in the ground state.
	www.physics.arizona.edu /~ina/dcc.html (239 words)

	Domains of Disoriented Chiral Condensate (ResearchIndex) (Site not responding. Last check: 2007-10-23)
		Abstract: The probability distribution of neutral pion fraction from independent domains of disoriented chiral condensate is characterized.
		The signal for the condensate is clear for a small number of domains but is greatly reduced for more than three.
		It has been proposed that this condensate can be modeled as a region of...
	citeseer.ist.psu.edu /94565.html (205 words)

	Statistical facets of DCC formation
		In the second part I adressed recent work [3, 4], where by applying a microscopically motivated Langevin description of the linear sigma model, we investigated for various different scenarios the stochastic evolution of a disoriented chiral condensate (DCC) in a rapidly expanding system.
		We advocate that an analysis by means of the higher order cumulants serves as a new and powerful signature.
		Z. Xu and C. Greiner, `Stochastic treatment of Disoriented Chiral Condensates within a Langevin description', hep-ph/9910562.
	int.phys.washington.edu /SEMINARS/Greiner/talk.html (356 words)

	[No title] (Site not responding. Last check: 2007-10-23)
		We have begun to show that starting from classical QCD and reintroducing some leading quantum corrections one can understand low energy nuclear physics phenomena as disparate as the static nuclear force, nucleon-antinucleon annihilation at rest and the disoriented chiral condensate.
		Here we propose to continue these investigations with a view to improving their predictive power and widening their investigations with a view to improving their predictive power and widening their domain of application.
		Our major effort will be on annihilation and on the disoriented chiral condensate while we continue to search for new avenues for application of our classical/quantum approach to QCD in nuclear physics.
	www.cs.utexas.edu /users/yguan/NSFAbstracts/Abstracts/MPS/PHY.MPS.a9505421.txt (195 words)

	Disoriented Chiral Condensate - Huan (ResearchIndex) (Site not responding. Last check: 2007-10-23)
		Abstract: The current theoretical understanding of disoriented chiral condensate is briefly reviewed.
		It is known that there are at least two occurrences of such phenomenon at work in the standard model: the electroweak symmetry-breaking and the chiral symmetry-breaking, in which the...
		0.5: Evolution Of The Disoriented Chiral Condensates In The Mean..
	citeseer.ist.psu.edu /149453.html (322 words)

	[No title] (Site not responding. Last check: 2007-10-23)
		I believe that toy models may help us to understand the nature of chiral symmetry breaking phenomena.
		I am also working in the area where the particle physics and the theory of gravity overlap.
		"Chiral Condensate, Master Field, Constituent Quark Model and All That in QCD in Two Dimensions (N)", Phys.
	axion.physics.ubc.ca /theory/zhitnitsky.html (249 words)

	FDA/CFSAN Economic Characterization of the Dietary Supplement Industry
		The steam dissolves the desired substances in the plant, then enters a condenser where it is condensed back into a liquid.
		This condensate then passes into a flask, where the extract either rises to the top or settles to the bottom and is separated from the water.
		Amino acids are identified as either L or D, to indicate the chiral form of the molecule.
	vm.cfsan.fda.gov /~comm/ds-econ2.html (6690 words)

	Untitled Document
		Lattice QCD results are compared with a generalized Nambu Jona-Lasinio model in which quarks couple simultaneously to the chiral condensate and to a background temporal gauge field representing Polyakov loop dynamics.
		It is pointed out how this condensate can be evaluated for in-medium situations in the large-N_c limit, where N_c denotes the number of colors [2].
		The third case allows the determination of a transition line to the chirally restored phase as a function of temperature and baryo-chemical potential [4].
	www-nsdth.lbl.gov /previous_seminars.html (2765 words)

	[No title] (Site not responding. Last check: 2007-10-23)
		We investigate the spectrum of the staggered Dirac operator in 4d quenched U(1) lattice gauge theory and its relationship to random matrix theory.
		In the confined as well as in the Coulomb phase the nearest-neighbor spacing distribution of the unfolded eigenvalues is well described by the chiral unitary ensemble.
		The physical origin of the chiral condensate in this phase deserves further study.
	www.elsevier.com /cdweb/journals/09205632/articles/83-84/0/S092056320000374.abstract.en (82 words)

	Renormal-order improvement of the Schwinger mass (ResearchIndex) (Site not responding. Last check: 2007-10-23)
		By performing a renormal-ordering, we arrive at a chiral perturbation expansion where the expansion parameter remains small even for large fermion mass.
		We use this renormal-ordered chiral perturbation theory for a computation of the Schwinger mass and compare our results with lattice...
		1.8: Normalization of the chiral condensate in the massive Schwinger..
	sherry.ifi.unizh.ch /65925.html (258 words)

	Solving Sign Problems with Merons
		We obtained measurements of the chiral condensate at several values of the temperature around
		Once all the data is collected we use the known finite size scaling formula to extrapolate the condensate to the limit of infinite lattice size and then taking the quark mass to zero.
		Below is a graph of the chiral condensate in this limit as a function of the temperature.
	www.phy.duke.edu /~sch/stagger.html (937 words)

	Notes to Symmetry and Symmetry Breaking
		Note that SSB was in fact first introduced in the DSB form.
		In the BCS theory of superconductivity, as well as in the 1961 theory of broken chiral symmetry by Nambu and Jona-Lasino, SSB is realized dynamically through a fermion condensate.
		In the BCS theory, for example, the gauge invariance of electromagnetism is spontaneously broken by pairs of electrons that condense -- forming a bound state -- in the ground state of a metal.
	plato.stanford.edu /entries/symmetry-breaking/notes.html (735 words)

	Paradoxes Resolved, Origins Illuminated - Broken Circle
		no i am not familiar with chiral condensate.but please tell me, i am willing to learn.
		It is a name being given to what we formely have considered to be the "Vacuum or Voids" of space.
		Since they don't really have a good handle on what it is yet let me suggest that you go online and search "Chiral Condensate Energy".
	www.metaresearch.org /msgboard/topic.asp?TOPIC_ID=234&whichpage=7 (2791 words)

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