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For all matters related to condensed matter physics.

20 votes
1 answer
160 views

What class of materials are closest to realizing the tunable coupling Hamiltonian?

From a physics point of view, there is an effective (approximation to second-order coupling Jaynes-Cummings) Hamiltonian of the form [1] \begin{equation} H=\sum_j\omega_j(t)\sigma_j^z+\sum_{\langle i, …
Siddhant Singh's user avatar
17 votes
1 answer
651 views

How to find the projected Hamiltonian for lowest flat-band in general?

In [1], starting with the bosonic Hamiltonian (Eqn. 1) for the dice lattice model with half flux density (with Ahronov-Bohm phases incorporated), \begin{equation} H=-t\sum_{\langle j,\mu\rangle}(a^\da …
Siddhant Singh's user avatar
16 votes
1 answer
84 views

What are good resources to study crystallographic defects in different dimensional systems a...

I wonder if there are any books or resources that may address one or more of the following questions: What kinds of defects are important for topology? Especially crystallographic defects. How do th …
Siddhant Singh's user avatar