Abstract Template

\documentclass[prb,aps,floatfix,superscriptaddress,10pts,onecolumn,notitlepage]{revtex4-1}

\usepackage{graphicx}
\usepackage{times}
\usepackage{hyperref}
\usepackage{verbatim}
\usepackage{amsmath}
\usepackage{anysize} % Para redefinir los márgenes
 \marginsize{1.8cm}{1.8cm}{1cm}{1.9cm} %{izqueirda}{derecha}{arriba
\usepackage{color}
\usepackage{siunitx}
\usepackage{stix}

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  \vspace{0.5\baselineskip}
  \noindent {\sl \textit{#1}}
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\setlength{\parindent}{0pt}

\begin{document}
 \flushbottom 
 \title{Polariton interaction at the single particle level}


 \author{\underline{Author 1}}
 \affiliation{Departamento de F\'isica Te\'orica de la Materia Condensada, Facultad de Ciencias, Universidad Aut\'onoma de Madrid, 28049 Madrid, Spain}

 \author{Author 2}
 \affiliation{Departamento de F\'isica Te\'orica de la Materia Condensada, Facultad de Ciencias, Universidad Aut\'onoma de Madrid, 28049 Madrid, Spain}


 \maketitle

 Here goes the body of the abstract.

 \end{document}