A bstract We present effective field theories for the weakly coupled Weyl- Z 2 semimetal, as well holographic realization strongly case. In both cases, anomalous systems have chiral anomaly and possess topological quantum phase transitions from semimetal phases to partly or fully trivial phases. find that transition is characterized by transport parameters, i.e. Hall conductivity conductivity. ...

Recent studies have shown that there are two types of topological quadrupolar semimetals. One is the bulk semimetal, which a conventional semimetal with gapless nodes in spectrum. The other type named surface possessing gapped but on There been many experiments implementation However, has never realized. Here we report experimental realization circuit system. To highlight properties also prepar...