Start Here
Choose your route through quantum field theory
Whether you are meeting QFT for the first time, returning to it for a calculation, or bringing it into a research problem, start with the shortest route that matches what you already know and what you want to produce.
Choose by intent
What brings you here?
You do not need to complete every prerequisite page. Pick a destination first, then check only the preparation that destination actually uses.
- First graduate course
I am beginning QFT
Check the background used by a first course, repair only the gaps that matter, then follow a complete taught sequence.
Check my preparation - Targeted preparation
I need to repair one prerequisite
Test a specific skill in mathematics, classical fields, relativity, quantum mechanics, statistics, or computation.
Find the right diagnostic - Returning reader
I know QFT and need a refresher
Reconstruct the assumptions and calculation chain behind the result you need without repeating a full course.
Open the focused refresher - Research direction
I need QFT for a particular problem
Choose a route for particle physics, quantum matter, gravity, mathematical QFT, scattering, EFT, or computation.
Compare specialist pathways
A route that adapts to you
Start from a goal, not a checklist
- 1
Name the outcome
Choose a course, calculation, field, or research task you want to reach.
- 2
Check the needed background
Use small work-based checks instead of judging readiness by course titles alone.
- 3
Study, test, and continue
Repair a gap when it blocks you, then return directly to the route you chose.
Structured ways to learn
Choose the kind of support you need
Courses teach in lesson order. The core roadmap connects the main ideas across QFT.org. Research skills focus on claims, evidence, and reproducibility.
- 01
Take a complete first course
Follow QFT I lesson by lesson, with derivations, worked examples, exercises, and solutions.
Open QFT I - 02
Use the core QFT roadmap
Move from fields and free theories to interactions, scattering, renormalization, gauge theory, and EFT.
Explore Core QFT - 03
Build research skills
Learn to trace a claim, evaluate its scope, reproduce a result, compare disagreements, and bound a project.
Start research onboarding
One connected resource
Know where to look next
Guided routes tell you what to study and why. QFT.org's volumes develop the physics and mathematics in depth, while Research helps you assess current claims.