Luis Álvarez-Gaumé (born 1955) is a Spanish theoretical physicist who works on string theory and quantum gravity.
In the 1980s, Álvarez-Gaumé had various important contributions to the field of string theory and its mathematical framework.
Together with Edward Witten he showed in 1983 that quantum field theories generally have gravitational anomalies.
[1] Shortly after this, Michael Green and John Schwarz showed that such anomalies are avoided in various realizations of superstring theory.
[3][4] In the 1990s, Álvarez-Gaumé studied supersymmetry breaking at low energies (in N = 2 SUSY gauge theories).