PhD in Condensed Matter Theory: Quantum Many-Body Physics at KTH (Yunxiang Liao)

Job Description

KTH’s Department of Physics is recruiting a doctoral student in theoretical condensed matter physics, supervised by Yunxiang Liao. The project focuses on quantum many-body physics, using mainly analytical and field-theoretical methods, supported by numerics, to study interacting quantum systems in and out of equilibrium. The group’s current interests include quantum chaos and thermalisation, disordered systems, non-equilibrium quantum dynamics and superconductivity.

At a glance

• Position: Doctoral student (1 post), up to four years full time
• Subject: Physics
• Supervisor: Yunxiang Liao (proposed), liao2@kth.se
• Reference: PA-2026-2708
• Apply by: 14 October 2026
• Apply: 14 October 2026

About the quantum many-body theory PhD

• Study interacting quantum systems in and out of equilibrium
• Use field-theoretical and other analytical methods, complemented by numerical work
• Work on topics such as quantum chaos, thermalisation, disorder, non-equilibrium dynamics and superconductivity
• Take doctoral courses and publish in peer-reviewed journals

What to include in your application

KTH asks for certified copies of diplomas, grades and English language certificates (with translations if needed), a CV, a letter of at most two pages on why you want to do research and how it links to your studies and goals, and representative publications or technical reports. Applications must arrive by midnight CET/CEST on the closing date.

How KTH doctoral employment works

Only applicants admitted to doctoral studies can be employed as doctoral students. The first contract is for up to one year and is then renewed for up to two years at a time, adding up to at most four years of full-time study. Up to 20% of working time may go to tasks such as teaching and administration. Applicants need English at the level of Swedish upper-secondary English B/6.

PhD applicants: browse our Find a supervisor directory to see who works in your area.

What KTH is looking for

• A master’s degree, or at least 240 credits including 60 at second-cycle level, or equivalent knowledge
• English equivalent to English B/6
• Ability to work independently and with others, and to analyse complex problems

Nice to have

• A strong background in quantum mechanics, statistical physics and quantum field theory
• Some numerical or programming experience

Pay and location

Doctoral students at KTH are salaried employees, paid monthly under KTH’s doctoral student salary agreement; the advert gives no figure. The post is full time in Stockholm, starting by agreement.

How to apply

Apply through the official KTH page. The closing date is 14 October 2026.

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