منابع مشابه
Chiral Multiplets of Large - N c Ground State Baryons
I show that in the large-N c limit the ground state baryons with helic-ity λ fall into an ((N c − 2λ)/4, (N c + 2λ)/4) irreducible representation of SU (2) × SU (2). This representation determines the absolute normalization of the ground state baryon axial vector couplings at large-N c. Results map precisely to (spin-flavor) SU (4) results. For instance, I find g A = (N c +2)/3. As a consequenc...
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The possibility of observing factorized ground states in dimerized spin systems is studied. A set of sufficient conditions is derived which allows one to establish whether or not it is possible to have factorization both in nearestneighbor and long-range Hamiltonians. These conditions can be derived by forcing factorization for each of the pairwise terms of the total Hamiltonian. Due to the pec...
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Spin-crossover molecules having a low-spin ground state and a low-lying excited high-spin state are promising components for molecular electronics. We theoretically examine one-dimensional spin-crossover chain molecules of the type of Fe2+ triazole complexes. The existence of the additional low-spin/high-spin degree of freedom leads to rich behavior already in the ground state. We obtain the co...
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In this paper we address a question posed by M. and T. Hoomann{Ostenhof, which concerns the total spin of the ground state of an atom or molecule. Each electron is given a value for spin, 1 2. The total spin is the sum of the individual spins. For a neutral atom, say, of nuclear charge Z, if all Z elecrons have the same spin, then the total spin would be 1 2 Z. There is a result of Lieb and Mat...
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Using a stochastic algorithm introduced in a previous paper, we study the finite size volume corrections and the fluctuations of the ground state energy in the Sherrington-Kirkpatrick and the EdwardsAnderson models at zero temperature. The algorithm is based on a suitable annealing procedure coupled with a balanced greedy-reluctant strategy that drives the systems towards the deepest minimum of...
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ژورنال
عنوان ژورنال: Physical Review D
سال: 2011
ISSN: 1550-7998,1550-2368
DOI: 10.1103/physrevd.83.096011