48 行
2.0 KiB
C++
48 行
2.0 KiB
C++
/**********************************************************
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This software is part of J.-S. Caux's ABACUS library.
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Copyright (c) J.-S. Caux.
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-----------------------------------------------------------
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File: ABACUS_XXZ_VOA.h
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Purpose: Declares classes for XXZ in zero field: Vertex Operator Approach
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***********************************************************/
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#ifndef ABACUS_XXZ_VOA_H
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#define ABACUS_XXZ_VOA_H
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#include "ABACUS.h"
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namespace ABACUS {
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DP I_xi_integral (DP xi, DP rho, DP req_prec, int max_nr_pts);
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/********************* TWO SPINONS ********************/
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DP Szz_XXZ_h0_2spinons (DP k, DP omega, Integral_table Itable);
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DP Szz_XXZ_h0_2spinons (Vect_DP args, Integral_table Itable);
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DP Szz_XXZ_h0_2spinons_alt (Vect_DP args, Integral_table Itable);
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DP Szz_XXZ_h0_2spinons_omega (Vect_DP args, Integral_table Itable);
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DP Szz_XXZ_h0_2spinons_omega_alt (Vect_DP args, Integral_table Itable);
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DP Szz_XXZ_h0_2spinons_intomega (Vect_DP args, Integral_table Itable);
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DP Szz_XXZ_h0_2spinons_intomega_alt (Vect_DP args, Integral_table Itable);
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DP Szz_XXZ_h0_2spinons_check_sumrule (DP Delta, DP req_prec, int max_nr_pts, Integral_table Itable);
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DP Szz_XXZ_h0_2spinons_check_sumrule_alt (DP Delta, DP req_prec, int max_nr_pts, Integral_table Itable);
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DP Fixed_k_sumrule_omega_Szz_XXZ_h0_N (DP Delta, DP k);
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DP GSE_XXZ_h0 (DP Delta, DP req_prec, int max_nr_pts);
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DP Fixed_k_sumrule_omega_Szz_XXZ_h0 (DP Delta, DP k, DP req_prec, int max_nr_pts);
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DP Szz_XXZ_h0_2spinons_check_fixed_k_Szz_sumrule (DP Delta, DP k, DP req_prec, int max_nr_pts, Integral_table Itable);
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DP Szz_XXZ_h0_2spinons_check_fixed_k_Szz_sumrule_alt (DP Delta, DP k, DP req_prec, int max_nr_pts, Integral_table Itable);
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//******************************** Functions to produce files similar to ABACUS **********************************
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void Produce_Szz_XXZ_h0_2spinons_file (DP Delta, int N, int Nomega, DP omegamax, Integral_table Itable);
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void Produce_Szz_XXZ_h0_2spinons_fixed_K_file (DP Delta, DP Kover2PI, int Nomega, Integral_table Itable);
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} // namespace ABACUS
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#endif
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