150 lines
4.4 KiB
Python
150 lines
4.4 KiB
Python
from pathlib import Path
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import matplotlib.pyplot as plt
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import numpy as np
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from scipy.stats import linregress
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import seaborn as sns
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sns.set_theme()
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params = {
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"font.family": "Serif",
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"font.serif": "Roman",
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"text.usetex": True,
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"axes.titlesize": "large",
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"axes.labelsize": "large",
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"xtick.labelsize": "large",
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"ytick.labelsize": "large",
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"legend.fontsize": "medium"
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}
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plt.rcParams.update(params)
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def plot_phase_transition(indir, outdir):
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files = [
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"size_20.txt",
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"size_40.txt",
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"size_60.txt",
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"size_80.txt",
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"size_100.txt",
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]
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labels = [
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"20",
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"40",
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"60",
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"80",
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"100",
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]
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colors = [
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"indianred",
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"sandybrown",
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"mediumseagreen",
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"steelblue",
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"mediumpurple"
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]
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figure1, ax1 = plt.subplots()
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figure2, ax2 = plt.subplots()
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figure3, ax3 = plt.subplots()
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figure4, ax4 = plt.subplots()
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figure5, ax5 = plt.subplots()
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# For linear regression
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L = []
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Tc = []
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size = 20
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for file, label, color in zip(files, labels, colors):
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t = []
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e = []
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m = []
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CV = []
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X = []
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# Append the lattice size
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L.append(size)
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size += 20
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with open(Path(indir, file)) as f:
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lines = f.readlines()
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for line in lines:
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l = line.strip().split(",")
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t.append(float(l[0]))
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e.append(float(l[1]))
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m.append(float(l[2]))
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CV.append(float(l[3]))
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X.append(float(l[4]))
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# Append the critical temp for the current lattice size
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Tc.append(t[X.index(max(X))])
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ax1.plot(t, e, label=label, color=color)
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ax2.plot(t, m, label=label, color=color)
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ax3.plot(t, CV, label=label, color=color)
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ax4.plot(t, X, label=label, color=color)
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# Attempt linear regression
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x = np.linspace(0, 1/20, 1001)
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inv_L = [1/x for x in L]
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regression = linregress(inv_L, Tc)
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f = lambda x: regression[0] * x + regression[1]
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stats = (f"$\\beta_0 = $ {regression[1]:.4f}\n"
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f"$\\beta_1 = $ {regression[0]:.4f}")
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bbox = dict(boxstyle="round", pad=0.3, fc="white", alpha=0.5)
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ax5.text(0.64, 0.64, stats, bbox=bbox, transform=ax1.transAxes, ha="right", va="center")
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ax5.scatter(inv_L, Tc, color="steelblue")
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# txt = f"$\\beta_1$ {regression[0]:.4f} \n$\\beta_0$ {regression[1]:.4f}"
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ax5.plot(x, f(x), color="mediumseagreen", linestyle="dashed")
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ax1.legend(title="Lattice size", loc="upper right")
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ax1.set_xlabel(r"$T$ $[J / k_{B}]$")
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ax1.set_ylabel(r"$\langle \epsilon \rangle$")
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ax2.legend(title="Lattice size", loc="upper right")
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ax2.set_xlabel(r"$T$ $[J / k_{B}]$")
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ax2.set_ylabel(r"$\langle |m| \rangle$")
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ax3.legend(title="Lattice size", loc="upper right")
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ax3.set_xlabel(r"$T$ $[J / k_{B}]$")
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ax2.set_ylabel(r"$C_{V}$ $[k_{B}]$")
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ax4.legend(title="Lattice size", loc="upper right")
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ax4.set_xlabel(r"$T$ $[J / k_{B}]$")
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ax4.set_ylabel(r"$\chi$ $[1 / J]$")
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ax5.set_xlabel(r"$1 / L$")
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ax5.set_ylabel(r"$T_C(L)$")
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figure1.savefig(Path(outdir, "energy.pdf"), bbox_inches="tight")
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figure2.savefig(Path(outdir, "magnetization.pdf"), bbox_inches="tight")
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figure3.savefig(Path(outdir, "heat_capacity.pdf"), bbox_inches="tight")
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figure4.savefig(Path(outdir, "susceptibility.pdf"), bbox_inches="tight")
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figure5.savefig(Path(outdir, "linreg.pdf"), bbox_inches="tight")
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plt.close(figure1)
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plt.close(figure2)
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plt.close(figure3)
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plt.close(figure4)
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plt.close(figure5)
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if __name__ == "__main__":
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plot_phase_transition(
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"fox_output/phase_transition/wide/10M/",
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"../latex/images/phase_transition/fox/wide/10M/",
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)
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plot_phase_transition(
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"fox_output/phase_transition/wide/1M/",
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"../latex/images/phase_transition/fox/wide/1M/",
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)
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plot_phase_transition(
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"fox_output/phase_transition/narrow/10M/",
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"../latex/images/phase_transition/fox/narrow/10M/",
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)
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plot_phase_transition(
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"output/phase_transition/", "../latex/images/phase_transition/hp/"
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)
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plot_phase_transition(
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"output/phase_transition/", "../latex/images/phase_transition/hp/"
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)
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plot_phase_transition(
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"output/phase_transition/",
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"../latex/images/phase_transition/hp/",
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)
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