Hierarchy problem: Jeg har aldri sett det formulert så bra før. Så da skal det på bloggen.

The physical principle of naturalness as articulated by ’tHooft states that a small parameter is natural only when a symmetry is gained as it is set to zero. In the context of quantum field theory, if a bare parameter is unnaturally set to zero, radiative corrections lead to a renormalized non-zero value. Therefore, if we want a small renormalized value without a symmetry, the bare value has to be fine tuned. The apparent violation of this principle in the value of the Higgs mass is known as “the gauge hierarchy problem”. A more dramatic fine tuning problem is that of the cosmological constant.

hep-ph/9309335v1

jeg tør minne om at dette er min blogg og jeg skriver om det jeg vil

IMGP0487

Nå er det snart på tide med snø igjen.

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One thought on “Hierarchy problem: Jeg har aldri sett det formulert så bra før. Så da skal det på bloggen.

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