Geodesic
Wick and anti-Wick operator symbols
Sbornik. Mathematics, Tome 15 (1971) no. 4, pp. 577-606 Cet article a éte moissonné depuis la source Math-Net.Ru

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In this paper Wick and anti-Wick operator symbols are studied in connection with expansion into normal and antinormal series in terms of generation and annihilation operators. By the aid of the Wick $A(\bar z,z)$ and anti-Wick $\overset0A(z,\bar z)$ symbol of the operator $\widehat A$ a series of characteristic spectral properties are identified for $\widehat A$. In particular, results are presented concerning necessary and sufficient conditions (separately) for $\widehat A$ to belong to the classes of bounded operators, completely continuous operators and nuclear operators, and also concerning bounds on the spectrum of $\widehat A$, and the asymptotic behavior of the number $N(E)$ of eigenvalues below $E$; and for positive selfadjoint operators a bound is obtained for the trace of the Green function: $$ \int\exp\bigl[-tA(\bar z,z)\bigr]\Pi\,dz\,d\bar z\leqslant\operatorname{sp}\exp(-t\widehat A)\leqslant\int\exp\bigl[-tA(z,\bar z)\bigr]\Pi\,dz\,d\bar z. $$ Bibliography: 14 titles. 
@article{SM_1971_15_4_a6,
     author = {F. A. Berezin},
     title = {Wick and {anti-Wick} operator symbols},
     journal = {Sbornik. Mathematics},
     pages = {577--606},
     year = {1971},
     volume = {15},
     number = {4},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1971_15_4_a6/}
}
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F. A. Berezin. Wick and anti-Wick operator symbols. Sbornik. Mathematics, Tome 15 (1971) no. 4, pp. 577-606. http://geodesic.mathdoc.fr/item/SM_1971_15_4_a6/

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