Jorge André Swieca or Jerzy Andrzej Swieca, Polish-born Brazilian mathematical physicist (Warsaw 16 December 1936 – São Paulo State 22 September 1980)

With E.C. Marino demonstrated a general theorem that proved that a fractioned topologic load necessarily lead to an infinite action (1978)

Developed a quantization method of solitons employing order-disorder variables (1982) 

Named Schwinger-Higgs mechanism

Proved Swieca screening theorem (1975)

With J.H. Lowenstein authored Quantum Electrodynamics in Two Dimensions (1970) 

EPONYMY  

Swieca phenomenon (1967)

Koberle-Swieca amplitude

Koberle-Swieca mass ratios

Lowenstein-Swieca operator solution (1971)

Swieca theorem

Haag-Swieca conjecture

Haag-Swieca compactness property