ISBN-13: 9781681749723 / Angielski / Twarda / 2018 / 107 str.
ISBN-13: 9781681749723 / Angielski / Twarda / 2018 / 107 str.
A central issue in any relativistic quantum theory is how to introduce interactions without spoiling relativistic invariance. This volume shows that interactions can be incorporated in a mass operator, in such a way that relativistic invariance is maintained. Surprisingly for a relativistic theory, such a construction allows for instantaneous interactions.