Status of the growth and fabrication of AlGaN-based UV laser diodes for near and mid-UV wavelength
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null (Ed.)We discuss the possible UV origin of discrete symmetries. We review the (i) interpretation of discrete R symmetries as discrete remnants of the Lorentz group; (ii) additional discrete transformations arising in orbifold compactifications, some of which have only been found recently; (iii) the stringy/gauge origin of family symmetries; (iv) CP violation from strings. These notes are based on an invited talk by the author at FHEP 2019 in Hyderabad.more » « less
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