English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

A two-leg ladder with $n$-component fermionic fields in the chains has beenconsidered using an analytic renormalization group method. The fixed points andpossible phases have been determined for generic filling as well as for ahalf-filled system and for the case when one of the subbands is half filled. Aweak-coupling Luttinger-liquid phase and several strong-coupling gapped phaseshave been found. In the Luttinger liquid phase, for the most general spindependence of the couplings, all $2n$ modes have different velocities if theinterband scattering processes are scaled out, while $n$ doubly degeneratemodes appear if the interband scattering processes remain finite. The role ofbackward-scattering, charge-transfer and umklapp processes has been analysedusing their bosonic form and the possible phases are characterized by thenumber of gapless modes. As a special case the SU($n$) symmetric Hubbard ladderhas been investigated numerically. It was found that this model does not scaleto the Luttinger liquid fixed point. Even for generic filling gaps open up inthe spectrum of the spin or charge modes, and the system is always insulator inthe presence of umklapp processes

physical review. b, condensed matter and materials physics

Possible phases of two coupled<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>n</mml:mi></mml:mrow></mml:math>-component fermionic chains determined using an analytic renormalization group method

Possible phases of two coupledn-component fermionic chains determined using an analytic renormalization group method