Order, Disorder and Confinement

doi:10.1063/1.2163755

Title: Order, Disorder and Confinement

Full Record
Other Related Research

Abstract

Studying the order of the chiral transition for Nf = 2 is of fundamental importance to understand the mechanism of color confinement. We present results of a numerical investigation on the order of the transition by use of a novel strategy in finite size scaling analysis. The specific heat and a number of susceptibilities are compared with the possible critical behaviours. A second order transition in the O(4) and O(2) universality classes are excluded. Substantial evidence emerges for a first order transition. Results are in agreement with those found by studying the scaling properties of a disorder parameter related to the dual superconductivity mechanism of color confinement.

Authors:

D'Elia, M. ^[1]; INFN, Sezione di Genova, Via Dodecaneso 33, I-16146 Genova ^[2]; Di Giacomo, A.; Pica, C. ^[3]; INFN, Sezione di Pisa, largo Pontecorvo 3, I-56127 Pisa ^[2]

Dipartimento di Fisica dell'Universita di Genova, Via Dodecaneso 33, I-16146 Genova (Italy)
(Italy)
Dipartimento di Fisica dell'Universita di Pisa, largo Pontecorvo 3, I-56127 Pisa (Italy)

Publication Date:: Thu Jan 12 00:00:00 EST 2006

OSTI Identifier:: 20787628

Resource Type:: Journal Article

Resource Relation:: Journal Name: AIP Conference Proceedings; Journal Volume: 806; Journal Issue: 1; Conference: International workshop on quantum chromodynamics: Theory and experiment, Conversano, Bari (Italy), 16-20 Jun 2005; Other Information: DOI: 10.1063/1.2163755; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)

Country of Publication:: United States

Language:: English

Subject:: 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; BAG MODEL; CHIRALITY; COLOR MODEL; O GROUPS; QUANTUM CHROMODYNAMICS; SCALE INVARIANCE; SPECIFIC HEAT; SUPERCONDUCTIVITY

Citation Formats


                    D'Elia, M., INFN, Sezione di Genova, Via Dodecaneso 33, I-16146 Genova, Di Giacomo, A., Pica, C., and INFN, Sezione di Pisa, largo Pontecorvo 3, I-56127 Pisa. Order, Disorder and Confinement.  United States: N. p., 2006. 
        Web.  doi:10.1063/1.2163755.

Copy to clipboard


                    D'Elia, M., INFN, Sezione di Genova, Via Dodecaneso 33, I-16146 Genova, Di Giacomo, A., Pica, C., & INFN, Sezione di Pisa, largo Pontecorvo 3, I-56127 Pisa. Order, Disorder and Confinement.  United States.  doi:10.1063/1.2163755.

Copy to clipboard


                    D'Elia, M., INFN, Sezione di Genova, Via Dodecaneso 33, I-16146 Genova, Di Giacomo, A., Pica, C., and INFN, Sezione di Pisa, largo Pontecorvo 3, I-56127 Pisa. Thu .  
        "Order, Disorder and Confinement".  United States.  
        doi:10.1063/1.2163755.

Copy to clipboard


                    
@article{osti_20787628,

  title        = {Order, Disorder and Confinement},

  author       = {D'Elia, M. and INFN, Sezione di Genova, Via Dodecaneso 33, I-16146 Genova and Di Giacomo, A. and Pica, C. and INFN, Sezione di Pisa, largo Pontecorvo 3, I-56127 Pisa},

  abstractNote = {Studying the order of the chiral transition for Nf = 2 is of fundamental importance to understand the mechanism of color confinement. We present results of a numerical investigation on the order of the transition by use of a novel strategy in finite size scaling analysis. The specific heat and a number of susceptibilities are compared with the possible critical behaviours. A second order transition in the O(4) and O(2) universality classes are excluded. Substantial evidence emerges for a first order transition. Results are in agreement with those found by studying the scaling properties of a disorder parameter related to the dual superconductivity mechanism of color confinement.},

  doi          = {10.1063/1.2163755},

  journal      = {AIP Conference Proceedings},

  number       = 1,

  volume       = 806,

  place        = {United States},

  year         = {Thu Jan 12 00:00:00 EST 2006},

  month        = {Thu Jan 12 00:00:00 EST 2006}

}

Copy to clipboard

Journal Article:

DOI: 10.1063/1.2163755

Other availability

Find in Google Scholar

Search WorldCat to find libraries that may hold this journal

Save / Share:

Export Metadata

Save to My Library

Similar records in OSTI.GOV collections:

Order-Disorder Transition in One-Dimensional System with Disorder in Composition

Journal Article Morozov, V.F. ; Badasyan, A.V. ; Mamasakhlisov, E.Sh. ; ... - Physics of Atomic Nuclei

The influence of structural inhomogeneity onto order-disorder transitions in 1D systems is considered in the scope of the Potts-like model with many-particle interactions. The helix-coil transition in DNAs, heterogeneous by hydrogen bonding energy, is considered as an example. The microcanonical method is employed to evaluate the free energy. The secular equation for the heteropolymer is constructed. Both the melting temperature and interval of DNA melting are obtained. In the limit of small difference between inverse melting temperatures of poly(A-T) and poly(G-C), the coincidence with classical results is obtained.
DOI: 10.1134/1.2131120
Effects of alloy disorder and confinement on phonon modes and Raman scattering in Si{sub x}Ge{sub 1−x} nanocrystals: A microscopic modeling

Journal Article Vasin, A. S. ; Vikhrova, O. V. ; Vasilevskiy, M. I., E-mail: mikhail@fisica.uminho.pt - Journal of Applied Physics

Confinement and alloy disorder effects on the lattice dynamics and Raman scattering in Si{sub 1−x}Ge{sub x} nanocrystals (NCs) are investigated numerically employing two different empirical inter-atomic potentials. Relaxed NCs of different compositions (x) were built using the Molecular Dynamics method and applying rigid boundary conditions mimicking the effect of surrounding matrix. The resulting variation of bond lengths with x was checked against Vegard's law and the NC phonon modes were calculated using the same inter-atomic potential. The localization of the principal Raman-active (Si-Si, Si-Ge, and Ge-Ge) modes is investigated by analysing representative eigenvectors and their inverse participation ratio. The dependencemore »« less
DOI: 10.1063/1.4870952
Calorimetric studies of the energetics of order-disorder in the system Mg{sub 1{minus}x}Fe{sub x}Ca(CO{sub 3}){sub 2}

Journal Article Navrotsky, A. ; Dooley, D. ; Reeder, R. ; ... - American Mineralogist

Calorimetric studies by Chai and Navrotsky (1996) on dolomite-ankerite energetics have been extended by including two additional types of samples: a very disordered stoichiometric MgCa(CO{sub 3}){sub 2} prepared from low-temperature aqueous solution and three largely ordered natural samples of intermediate iron content. Combining these data with previous work, the authors see three distinct energetic trends. These represent samples with nearly complete order, nearly complete disorder, and intermediate order. From these trends, the enthalpy of complete disordering is estimated to be 33 {+-} 6 kJ/mol for MgCa(CO{sub 3}){sub 2} and 18 {+-} 5 kJ/mol for FeCa(CO{sub 3}){sub 2}.
DOI: 10.2138/am-1999-1016
Order-disorder effects in nitrided Sm-Fe permanent magnets

Journal Article Meacham, B. E. ; Shield, J. E. ; Branagan, D. J. - Journal of Applied Physics

Rapidly solidified Sm{sub 11}Fe{sub 89} was observed to form partially ordered Sm{sub 2}Fe{sub 17}. The ordering increased systematically with annealing temperature, reaching an order parameter of 0.8 after annealing at 950 degree sign C for 15 min. The coercivity of the corresponding interstitial compound Sm{sub 2}Fe{sub 17}N{sub x} varied with annealing temperature and thus order parameter. The coercivity reached a maximum for an order parameter of 0.45-5, then dramatically decreased as the order increased. This behavior is characteristic of demagnetization controlled by domain wall pinning by antiphase boundaries. (c) 2000 American Institute of Physics.
DOI: 10.1063/1.372815
Drastic lowering of the order-disorder phase transition temperatures in Zr{sub 1-x}M{sub x}W{sub 2}O{sub 8-y} (M=Sc,Y,In) solid solutions

Journal Article Yamamura, Yasuhisa ; Nakajima, Noriyuki ; Tsuji, Toshihide ; ... - Physical Review. B, Condensed Matter and Materials Physics

ZrW{sub 2}O{sub 8} undergoes an order-disorder phase transition associated with the orientational disordering of the WO{sub 4} tetrahedra at 440 K. We have showed previously that the phase transition temperatures of Zr{sub 1-x}M{sub x}W{sub 2}O{sub 8-y} (M=Sc,Y,In) solid solutions are decreased by a maximum of 80 K with only 4% trivalent Sc content. In order to understand the drastic composition dependence on the transition temperature, precise x-ray diffraction experiments on the solid solutions were performed by using a synchrotron radiation. The results provided the evidence of the strong correlation between the phase transition temperature and the number of WO{sub 4}more »« less
DOI: 10.1103/PhysRevB.70.104107

Similar Records