We study instantaneous quenches from infinite temperature to well below Tc in the two-dimensional (2D) square lattice Ising antiferromagnet in the presence of a longitudinal external magnetic field. Under single-spin-flip Metropolis algorithm Monte Carlo dynamics, this protocol produces a pair of metastable magnetization plateaus that prevent the system from reaching the equilibrium ground state except for some special values of the field. This occurs despite the absence of intrinsic disorder or frustration. We explain the plateaus in terms of local spin configurations that are stable under the dynamics. Although the details of the plateaus depend on the update scheme, the underlying principle governing the breakdown of ergodicity is quite general and provides a broader paradigm for understanding failures of ergodicity in Monte Carlo dynamics. See also: Iaizzi, Phys. Rev. E102 032112 (2020), doi:10.1103/PhysRevE.102.032112
*Note: The views expressed here are the speaker’s, and do not necessarily represent the positions or policies of the AAAS STPF Program, the US Dept. of Energy, or the US Government.
The APS virtual March meeting is just around the corner! Although we are not meeting in person, FECS will spare no effort on ensuring a meeting that is as successful as before. We are hosting the following three invited sessions to highlight the contributions from early career scientists in science, industry, and international collaboration:
The APS Annual Leadership Meeting will be taking place this week on Thursday 2/4 and Saturday 2/6. This is usually an in-person meeting in DC, so registration is usually limited to the leadership of APS Units, but this year it’s virtual and they have extended registration to all APS members for free (it might be free to nonmembers, but I am not sure).
I attended last year and it was an extremely valuable look at the work that APS does to advance physics, from organizing conferences to interacting with the congress and federal agencies to advance policies to strengthen scientific research. That includes obvious things, like most science funding, and less obvious things, like ensuring an adequate supply of liquid helium.
Application deadline: January 15, 2021 11:59pm EST Apply now!
The 2021 March Meeting will be held completely online. In order to support early career physicists, FECS is running a one-time “mini grant” program to cover the cost of registration (up to $165). Note: in order to receive that low rate, you must register for the meeting by the early bird deadline of January 25, 2021.
To be considered, applicants must be recent PhD recipients (past 5 years), present a poster or talk at the meeting, and be current members of the APS Forum for Early Career Scientists (free to join, link below). Women, underrepresented minorities and candidates who can clearly demonstrate a need for funding are especially encouraged to apply. Applications are due January 15, 2021 11:59pm EST. If you have any questions, please contact me.
One January 1, I started my term as Chair-Elect for the APS Forum for Early Career Scientists (FECS). This is a three-year position; I will serve as Chair-Elect, Chair and then Past Chair in 2021, 2022 and 2023 respectively. I have already served on the Executive Committee for the past two years as a Member-at-Large, and I am excited to continue serving this community. On behalf of FECS, I will also be serving as an Ex-Officio member of the APS Committee on Careers and Professional Development (CCPD) and I’m looking forward to shaping the crucial career programming that APS offers its members.
I’m thrilled to tell you all that I’m a candidate for the Chair line of the APS Forum for Early Career Scientists! This is a three year position consisting of one year each as chair elect, chair and past chair. I’ve serving as a member of the FECS Executive Committee for the past two years and I’m excited to be able to continue my service with FECS. If you’re a member of FECS, please vote for me! Polls close on November 20; you should have an email in your inbox now with the subject line “APS FECS Election”. I’ve included my bio and candidate statement below.
If you’re a member of APS and not a member of FECS, you should sign up! I don’t know if you would be able to vote, but it’s free and it’s a way to encourage APS to support postdocs other early career scientists (and to get support yourself)!
The Forum for Early Career Scientists (FECS) is an APS forum dedicated to addressing the unique challenges of early career scientists, which include postdocs, recent PhDs in industry, junior faculty, research associates and so on. FECS is one of the newest and fastest-growing APS fora and we’re looking for nominations of new people to join our executive board. Nominations are due Monday 8/31.
We are seeking nominations from people in all career stages, but since this is a group dedicated to early career scientists, we need early career scientists on our executive board. More information on how to get involved after the break.