Marked correlation functions in perturbation theory
نویسندگان
چکیده
منابع مشابه
Correlation Functions in Perturbation Theory
involving additional fields Φ̂I(z1)Φ̂I(z2) · · ·. Note that in eq. (3) the fields are in the interaction rather than Heisenberg picture, so they evolve with time as free fields according to the free Hamiltonian Ĥ0. Likewise, |0〉 is the free theory’s vacuum, i.e. the ground state of the free Hamiltonian Ĥ0 rather than the full Hamiltonian Ĥ. To work out the relation between (1) and (3), we start b...
متن کاملCorrelation functions in super Liouville theory.
We calculate threeand four-point functions in super Liouville theory coupled to super Coulomb gas on world sheets with spherical topology. We first integrate over the zero mode and assume that a parameter takes an integer value. After calculating the amplitudes, we formally continue the parameter to an arbitrary real number. Remarkably the result is completely parallel to the bosonic case, the ...
متن کاملLogarithmic Correlation Functions in Liouville Field Theory
We study four-point correlation functions with logarithmic behaviour in Liouville field theory on a sphere, which consist of one kind of the local operators. We study them as non-integrated correlation functions of the gravitational sector of two-dimensional quantum gravity coupled to an ordinary conformal field theory in the conformal gauge. We also examine, in the (p, q) minimal conformal fie...
متن کاملCorrelation Energy Estimators based on Møller-Plesset Perturbation Theory
Some methods for the convergence acceleration of the Møller-Plesset perturbation series for the correlation energy are discussed. The order-by-order summation is less effective than the Feenberg series. The latter is obtained by renormalizing the unperturbed Hamilton operator by a constant factor that is optimized for the third order energy. In the fifth order case, the Feenberg series can be i...
متن کاملStrong correlation treated via effective hamiltonians and perturbation theory.
We propose a new approach to determine a suitable zeroth-order wavefunction for multiconfigurational perturbation theory. The same ansatz as in complete active space (CAS) wavefunction optimization is used but it is split in two parts, a principal space (A) and a much larger extended space (B). Löwdin's partitioning technique is employed to map the initial eigenvalue problem to a dimensionality...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Cosmology and Astroparticle Physics
سال: 2020
ISSN: 1475-7516
DOI: 10.1088/1475-7516/2020/01/006