- Email: [email protected]
Anisotropic honeycomb domain wall networks in uniaxial systems
ANNALS OF PHYSICS172, 243-244 (1986)
Abstracts
of Papers
to Appear
in Future
Issues
Path Integral Measure of the N = 1 Spinning String. M. ROCEK, P. VAN NIEUWENHUIZEN,AND S. C. ZHANG. Institute for Theoretical Physics, State University of New York at Stony Brook, Stony Brook, New York 11794.
Superspace
Using the superspace formulation of the N = 1 spinning string, we obtain a path integral measure which is free from world-sheet general-coordinate as well as Q-supersymmetry anomalies. Using this measure the conformal anomaly is explicitly calculated by extending Fujikawa’s method to superspace. A complete solution of the 2-dimensional supergravity constraints is given. Model for Anomalous Nuclei. LEONARDO CASTILLEJO,Department of Physics and Astronomy, University College, London WClE 6BT, England; ALFRED S. GOLDHABER AND ANDREW D. JACKSON, Stony Brook, Long Island, New York; MIKKEL B. JOHNSON, Los Alamos National Laboratory, Los Alamos, New Mexico.
Dinotor
The simplest version of the MIT bag model implies the existence of metastable toroidal bags, with large radius proportional to the enclosed baryon number, and small radius comparable to that of an ordinary nucleon (we refer to those toroidal bags as dinotors). Considerations of various possible instabilities, and of the effects of quark interactions through intermediate gluons, suggest that the metastability is still valid when the model is treated more realistically. These results might provide an explanation for reports of anomalously large interaction cross sections of secondary fragments (“anomalons”) observed in visual track detectors. However, it appears that the most likely characteristics of toroidal bags would not be compatible with those of anomalons, and would not be as easy to detect in emulsions. Honevcomb Domain Wall Networks in Uniaxial Systems. HYUNGGYU PARK, EBERHARDK. RIEDEL, AND MARCEL DEN Nus. Department of Physics, University of Washington, Seattle, Washington 98195.
Anisotropic
A systematic study of the possibility of weakly incommensurate phases with a honeycomb domain wall network structure in uniaxial systems is presented. Competition between breathing entropy, the energy needed to tilt a domain wall, and the core energy of intersections can stabilize honeycomb phases in uniaxial systems. Two types of honeycomb networks are introduced, O-shaped and X-shaped. Breathing entropy turns out to be much weaker, compared to meander entropy, in uniaxial systemsthan in isotropic ones. Still, our study suggests that at the chiral melting transition the commensurate solid melts into an incommensurate fluid with a local short ranged O-shaped network order. Moreover, breathing entropy of X-shaped honeycomb networks might change the Pokrovsky-Talapov nature of the commensurate to striped incommensurate solid transition.
of the Clustering Properties of Nuclear States. R. BECK AND F. DICKMANN. Kernforschungszentrum Karlsruhe, Institut fiir Kernphysik III, P.O. Box 3640, D-7500 Karlsruhe 1, Federal Republic of Germany; AND R. G. LOVAS. Kernforschungszentrum Karlsruhe, Institut fiir Kernphysik III, P.O. Box 3640, D-7500 Karlsruhe 1, Federal Republic of Germany and Magyar Tudomanyos Akadtmia Atommagkutato Intizete, Debrecen, P.O. Box 51, H-4001, Hungary.
Quantification
243 0003-4916/86
$7.50
Copyright 0 1986 by Academic Press. Inc. All rights of reproduction in any lorm reserved.
Abstracts
of Papers
to Appear
in Future
Issues
Path Integral Measure of the N = 1 Spinning String. M. ROCEK, P. VAN NIEUWENHUIZEN,AND S. C. ZHANG. Institute for Theoretical Physics, State University of New York at Stony Brook, Stony Brook, New York 11794.
Superspace
Using the superspace formulation of the N = 1 spinning string, we obtain a path integral measure which is free from world-sheet general-coordinate as well as Q-supersymmetry anomalies. Using this measure the conformal anomaly is explicitly calculated by extending Fujikawa’s method to superspace. A complete solution of the 2-dimensional supergravity constraints is given. Model for Anomalous Nuclei. LEONARDO CASTILLEJO,Department of Physics and Astronomy, University College, London WClE 6BT, England; ALFRED S. GOLDHABER AND ANDREW D. JACKSON, Stony Brook, Long Island, New York; MIKKEL B. JOHNSON, Los Alamos National Laboratory, Los Alamos, New Mexico.
Dinotor
The simplest version of the MIT bag model implies the existence of metastable toroidal bags, with large radius proportional to the enclosed baryon number, and small radius comparable to that of an ordinary nucleon (we refer to those toroidal bags as dinotors). Considerations of various possible instabilities, and of the effects of quark interactions through intermediate gluons, suggest that the metastability is still valid when the model is treated more realistically. These results might provide an explanation for reports of anomalously large interaction cross sections of secondary fragments (“anomalons”) observed in visual track detectors. However, it appears that the most likely characteristics of toroidal bags would not be compatible with those of anomalons, and would not be as easy to detect in emulsions. Honevcomb Domain Wall Networks in Uniaxial Systems. HYUNGGYU PARK, EBERHARDK. RIEDEL, AND MARCEL DEN Nus. Department of Physics, University of Washington, Seattle, Washington 98195.
Anisotropic
A systematic study of the possibility of weakly incommensurate phases with a honeycomb domain wall network structure in uniaxial systems is presented. Competition between breathing entropy, the energy needed to tilt a domain wall, and the core energy of intersections can stabilize honeycomb phases in uniaxial systems. Two types of honeycomb networks are introduced, O-shaped and X-shaped. Breathing entropy turns out to be much weaker, compared to meander entropy, in uniaxial systemsthan in isotropic ones. Still, our study suggests that at the chiral melting transition the commensurate solid melts into an incommensurate fluid with a local short ranged O-shaped network order. Moreover, breathing entropy of X-shaped honeycomb networks might change the Pokrovsky-Talapov nature of the commensurate to striped incommensurate solid transition.
of the Clustering Properties of Nuclear States. R. BECK AND F. DICKMANN. Kernforschungszentrum Karlsruhe, Institut fiir Kernphysik III, P.O. Box 3640, D-7500 Karlsruhe 1, Federal Republic of Germany; AND R. G. LOVAS. Kernforschungszentrum Karlsruhe, Institut fiir Kernphysik III, P.O. Box 3640, D-7500 Karlsruhe 1, Federal Republic of Germany and Magyar Tudomanyos Akadtmia Atommagkutato Intizete, Debrecen, P.O. Box 51, H-4001, Hungary.
Quantification
243 0003-4916/86
$7.50
Copyright 0 1986 by Academic Press. Inc. All rights of reproduction in any lorm reserved.