From b16fda7259a523807e5ae469481d65668af8c136 Mon Sep 17 00:00:00 2001
From: guanjihuan <guanjihuan@163.com>
Date: Tue, 5 Dec 2023 22:14:52 +0800
Subject: [PATCH] Create self_energy_matrix_form.py

---
 .../self_energy_matrix_form.py                | 42 +++++++++++++++++++
 1 file changed, 42 insertions(+)
 create mode 100644 2023.12.05_self_energy_matrix_form/self_energy_matrix_form.py

diff --git a/2023.12.05_self_energy_matrix_form/self_energy_matrix_form.py b/2023.12.05_self_energy_matrix_form/self_energy_matrix_form.py
new file mode 100644
index 0000000..6fa9a30
--- /dev/null
+++ b/2023.12.05_self_energy_matrix_form/self_energy_matrix_form.py
@@ -0,0 +1,42 @@
+"""
+This code is supported by the website: https://www.guanjihuan.com
+The newest version of this code is on the web page: https://www.guanjihuan.com/archives/37881
+"""
+
+import guan
+import numpy as np
+
+Nx = 10
+Ny = 3
+fermi_energy = 0
+
+h00 = guan.hamiltonian_of_finite_size_system_along_one_direction(N=Ny)
+h01 = np.eye(Ny)
+
+# 电极和中心区之间的跃迁
+h_LC = np.zeros((Ny, Nx*Ny))
+h_CR = np.zeros((Nx*Ny, Ny))
+for iy in range(Ny):
+    h_LC[iy, 0+iy] = 1
+    h_CR[(Nx-1)*Ny+iy, iy] = 1
+
+# 和中心区哈密顿量耦合后的电极自能
+right_self_energy, left_self_energy, gamma_right, gamma_left = guan.self_energy_of_lead_with_h_LC_and_h_CR(fermi_energy, h00, h01, h_LC, h_CR)
+
+print(right_self_energy.shape)
+print(left_self_energy.shape)
+print()
+
+# 找到矩阵元素非零的坐标
+num = len(right_self_energy)
+for i1 in range(num):
+    for i2 in range(num):
+        if abs(right_self_energy[i1, i2])>1e-8:
+            print((i1, i2))
+print()
+
+num = len(left_self_energy)
+for i1 in range(num):
+    for i2 in range(num):
+        if abs(left_self_energy[i1, i2])>1e-8:
+            print((i1, i2))
\ No newline at end of file