2007
DOI: 10.1134/s0081543807010130
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Nondegenerate saddle points and the absence of mixing in flows on surfaces

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Cited by 13 publications
(10 citation statements)
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“…3.2) is devised to deal with flows which display absence of mixing. An important early criterion for absence of mixing appears in Katok's work [Ka80], which shows that special flows over IETs under roof functions of bounded variation are never mixing, and by Kochergin's, which shows the absence of mixing for special flows over rotations under a roof with a symmetric logarithmic singularity (see [Ko72,Ko07]). Both criteria require as input tightness of Birkhoff sums along some subsequences of rigidity (or partial rigidity) times, i.e.…”
Section: Strategy Of the Proof Of The Main Resultmentioning
confidence: 99%
See 1 more Smart Citation
“…3.2) is devised to deal with flows which display absence of mixing. An important early criterion for absence of mixing appears in Katok's work [Ka80], which shows that special flows over IETs under roof functions of bounded variation are never mixing, and by Kochergin's, which shows the absence of mixing for special flows over rotations under a roof with a symmetric logarithmic singularity (see [Ko72,Ko07]). Both criteria require as input tightness of Birkhoff sums along some subsequences of rigidity (or partial rigidity) times, i.e.…”
Section: Strategy Of the Proof Of The Main Resultmentioning
confidence: 99%
“…In this case, mixing depends on the (a)symmetry of the singularities. The first result on absence of mixing for special flows with symmetric logarithmic singularities over rotations is due to Kochergin [Ko72] (see also [Ko07] where the result was proved for all irrational frequencies). If the roof has an asymmetric logarithmic singularities, instead, mixing is typical, as it was proved by Sinai-Khanin for a full measure set of rotations numbers (see also further works by Kochergin [Ko75,Ko03,Ko04,Ko04']).…”
Section: Previous Results On Ergodic and Spectral Propertiesmentioning
confidence: 99%
“…22 Absence of mixing for typical flows for any g ≥ 2 was proved in [86], while weak mixing is proved also for minimal components of locally Hamiltonian flow with simple saddles in [85]. Let us remark that a result in this direction for g = 1 was already proved by Kocergin in [52] (see also [54]) (in the language of special flows over rotations, which does not have a direct implication for locally Hamiltonian flows but suggested that the absence of mixing could hold also when rotations are replaced by IETs and hence in higher genus. Absence of mixing in the special case of S with g = 2 and locally Hamiltonian flows with two isomorphic simple saddles was shown by Scheglov [78].…”
Section: The Role Of Shearing In Slow Mixingmentioning
confidence: 87%
“…Flows on 2-tori with symmetric logarithmic singularities of return time (e.g., Eq. 6 at f > f crit ) do not mix as well (23). Flows on 2-tori with asymmetric logarithmic singularities of return time (24) and the flows on 2-tori with power-law singularities of return time (25) mix.…”
Section: Singularities Of Passage Timementioning
confidence: 99%