Preface: Special issue ‘Unifying Concepts in Glass Physics VII’

This special issue presents papers from theUnifying Concepts in Glass Physics VIIconference, which focussed on new developments in our understanding the glass transition, jamming and related slow and complex relaxation in classical and quantum systems, looking for connections between manifestations of glassy phenomena, contrasting statistical mechanics perspectives on these problems, and exploring applications in other areas of soft and active matter, optimisation, information science, and beyond.