Chapter IV PHYSICS OR FORMALISM?

Karl Raimund Popper

Editor's Foreword Acknowledgements Author's Note, 1982 INTRODUCTORY COMMENTS Preface 1982: On a Realistic and Commonsense Interpretation of Quantum Theory QUANTUM THEORY AND THE SCHISM IN PHYSICS Chapter I Understanding Quantum Theory and its Interpretation Chapter II The Objectivity of Quantum Theory Chapter III Towards a Resolution of the Paradoxes of Quantum Theory Chapter IV A Metaphysical Epilogue Bibliographical Addendum, 1989 Index About the Author About the Editor

Alexei A. Abrikosov

When studying thermodynamic properties by means of quantum field theory methods one can deform the Matsubara integration contour in the complex time plane. The deformations are restricted by Hamiltonian singularities which are due to turning on an interaction. One should construct the real-time technique in the true vacuum taking the interaction into account.

Scott Soames