Barbero G., J. FernandoMargalef Bentabol, JuanSánchez Villaseñor, Eduardo Jesús2017-06-202018-02-272017-02-27Classical and Quantum Gravity, 34 (6), 065004.0264-9381https://hdl.handle.net/10016/24697We discuss the unitarity of the quantum evolution between arbitrary Cauchy surfaces of a 1 + 1 dimensional free scalar field defined on a bounded spatial region and subject to several types of boundary conditions including Dirichlet, Neumann and Robin.15application/pdfeng© IOP Publishing Ltd, 2017Arbitrary Cauchy surfacesUnitary quantum evolutionBounded domainsBogoliubov coefficientsQuantum field theoryBoundary conditionsresearch articleMatemáticasMaterialeshttps://dx.doi.org/10.1088/1361-6382/aa5e8copen access065004-16065004-15Classical and Quantum Gravity34AR/0000019416