#### Chandrasekhar Hall

#### Parton paradigm for the fractional quantum Hall effect in the second Landau level

#### Ajit C Balram

##### Niels Bohr Institute, Copenhagen

*The fractional quantum Hall effect (FQHE) in the lowest Landau level (LLL) is understood in a unified manner in terms of composite fermions, which are*

bound states of electrons and vortices. The strongest states in the LLL are understood as integer quantum Hall states of composite fermions and the

compressible 1/2 state as a Fermi liquid of composite fermions. For the FQHE in the second LL, such a unified description does not exist: experimentally observed states are described by different physical mechanisms. In this talk I will discuss our first steps towards a unified understanding of states in the second LL in terms of partons, which are a generalization of composite fermions. I will elucidate in detail our recent

work on the parton construction of wave functions to describe many of the FQH states observed in the second LL.

Done