>>11326569No one cares about rigorous undergrad material. Suffer through undergrad material, learn quantum field theory asap.
For undergrad physics. Just read these Schutz's GR book for SR, shankar's QM, sakurai's QM, lahiri and pal's QFT, peskin and schroeder's QFT.
For math, read baez-gauge fields, bertlmann-anomalies in qft,
https://web.evanchen.cc/napkin.html , schlichenmaier-riemann surfaces,
http://geocalc.clas.asu.edu/pdf/OerstedMedalLecture.pdfThis book is the most friendly serious book to start
https://www.claymath.org/library/monographs/cmim01c.pdfThen after you're finally at what mathematicians and physicists actually care about when they talk about rigorous physics.
https://ncatlab.org/nlab/show/quantum+field+theoryhttps://ncatlab.org/nlab/search?query=quantum+field+theory 
