Study of phase transitions in spin and gauge models using Fisher's zeros

Phase transitions in Zn gauge models: Towards quantum simulations of the Schwinger-Weyl QED

Physical Review D ◽

10.1103/physrevd.98.074503 ◽

2018 ◽

Vol 98 (7) ◽

Cited By ~ 18

Author(s):

Elisa Ercolessi ◽

Paolo Facchi ◽

Giuseppe Magnifico ◽

Saverio Pascazio ◽

Francesco V. Pepe

Keyword(s):

Phase Transitions ◽

Gauge Models ◽

Quantum Simulations

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STUDY OF Z(N) GAUGE THEORIES ON A THREE-DIMENSIONAL PSEUDORANDOM LATTICE

International Journal of Modern Physics A ◽

10.1142/s0217751x88000655 ◽

1988 ◽

Vol 03 (06) ◽

pp. 1499-1518

Author(s):

D. PERTERMANN ◽

J. RANFT

Keyword(s):

Phase Transitions ◽

Gauge Theory ◽

Gauge Theories ◽

Lattice Gauge Theory ◽

Three Dimensional ◽

Expectation Values ◽

First Order ◽

Gauge Models ◽

Lattice Gauge

Using the simplicial pseudorandom version of lattice gauge theory we study simple Z(n) gauge models in D=3 dimensions. In this formulation it is possible to interpolate continuously between a regular simplicial lattice and a pseudorandom lattice. Calculating average plaquette expectation values we look for the phase transitions of the Z(n) gauge models with n=2 and 3. We find all the phase transitions to be of first order, also in the case of the Z(2) model. The critical couplings increase with the irregularity of the lattice.

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A remark on the phase transitions of modified action spin and gauge models

Physics Letters B ◽

10.1016/0370-2693(83)90597-x ◽

1983 ◽

Vol 126 (3-4) ◽

pp. 236-240 ◽

Cited By ~ 1

Author(s):

Nathan Seiberg ◽

Sorin Solomon

Keyword(s):

Phase Transitions ◽

Gauge Models

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Electron Microscopy of Graphite Intercalation Compounds

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100055564 ◽

1982 ◽

Vol 40 ◽

pp. 544-545

Author(s):

G. Timp ◽

L. Salamanca-Riba ◽

L.W. Hobbs ◽

G. Dresselhaus ◽

M.S. Dresselhaus

Keyword(s):

Electron Microscopy ◽

Phase Transitions ◽

Domain Wall ◽

Intercalation Compounds ◽

Lattice Plane ◽

Wall Model ◽

Graphite Intercalation Compounds ◽

Fundamental Symmetry ◽

Graphite Intercalation

Electron microscopy can be used to study structures and phase transitions occurring in graphite intercalations compounds. The fundamental symmetry in graphite intercalation compounds is the staging periodicity whereby each intercalate layer is separated by n graphite layers, n denoting the stage index. The currently accepted model for intercalation proposed by Herold and Daumas assumes that the sample contains equal amounts of intercalant between any two graphite layers and staged regions are confined to domains. Specifically, in a stage 2 compound, the Herold-Daumas domain wall model predicts a pleated lattice plane structure.

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Multiple phase transitions investigated by high-speed TEM

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100175880 ◽

1990 ◽

Vol 48 (4) ◽

pp. 550-551

Author(s):

Oleg Bostanjoglo ◽

Peter Thomsen-Schmidt

Keyword(s):

Phase Transitions ◽

High Speed ◽

Short Exposure ◽

Semiconductor Film ◽

Time Resolved ◽

Short Exposure Time ◽

Multiple Phase ◽

Model Substance ◽

History Of ◽

Electron Image

Thin GexTe1-x (x = 0.15-0.8) were studied as a model substance of a composite semiconductor film, in addition being of interest for optical storage material. Two complementary modes of time-resolved TEM were used to trace the phase transitions, induced by an attached Q-switched (50 ns FWHM) and frequency doubled (532 nm) Nd:YAG laser. The laser radiation was focused onto the specimen within the TEM to a 20 μm spot (FWHM). Discrete intermediate states were visualized by short-exposure time doubleframe imaging /1,2/. The full history of a transformation was gained by tracking the electron image intensity with photomultiplier and storage oscilloscopes (space/time resolution 100 nm/3 ns) /3/. In order to avoid radiation damage by the probing electron beam to detector and specimen, the beam is pulsed in this continuous mode of time-resolved TEM,too.Short events ( <2 μs) are followed by illuminating with an extended single electron pulse (fig. 1c)

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