\documentclass{standalone}
\usepackage{tikz}
\usepackage{pgfplots}
\begin{document}
\begin{tikzpicture}[brace1/.style={decoration={brace,amplitude=7pt},
decorate}]
\foreach \x in {-5,...,5}{%Change the variation
\draw (\x,0.2) -- (\x,-0.2);
}
\node[anchor=north] at (-6,-0.6) {};
\node[anchor=north] at (6,-0.6) {};
\draw[<->] (-6,0) -- (6,0);
\draw[brace1, line width=0.2mm] (0.1,0.5) -- (4,0.5) node[above] at(2,0.75) {Two}; %Change name
\draw[brace1, line width=0.2mm] (-4,0.5) -- (-0.1,0.5) node[above] at(-2,0.75) {One}; %Change name
\node[below] at (0,-0.1) {${t_{a}}^{0}$};
\node[below] at (4,-0.1) {${t_{a}}^{m-1}$};
\node[below] at (5,-0.1) {${t_{a}}^{m}$};
\node[below] at (-4,-0.1) {${t_{a}}^{-(m-1)}$};
\node[below] at (-5,-0.1) {${t_{a}}^{-m}$};
\end{tikzpicture}
\end{document}