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Source: Physical Review D. 2020. Vol. 101, № 12. P. 125004-1-125004-15
Type: статьи в журналах
Date: 2020
Description:
We consider the class of higher derivative field equations whose wave operator is a square of another self-adjoint operator of lower order. At the free level, the models of this class are shown to adm
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Source: Physical Review D. 2019. Vol. 99, № 4. P. 045020-1-045020-15
Type: статьи в журналах
Date: 2019
Description:
We consider the general higher derivative field theories of derived type. At free level, the wave operator of derived-type theory is a polynomial of the order n≥2 of another operator W which is of the
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Source: Russian physics journal. 2015. Vol. 57, № 11. P. 1561-1565
Type: статьи в журналах
Date: 2015
Description:
The stability of a Pais–Uhlenbeck nonlinear oscillator with higher derivatives is examined. The stability of the linear theory is demonstrated and a nonlinearity preserving the stability of the system
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