Authors: Kaparulin, Dmitry S. | Lyakhovich, Simon L. | Nosyrev, Oleg D.

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 ... More

Authors: Abakumova, Victoria A. | Lyakhovich, Simon L. | Kaparulin, Dmitry S.

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 ... More

Authors: Kaparulin, Dmitry S. | Lyakhovich, Simon L.

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 ... More