In this biography
Quick facts
- Born
- 1 November 1950
- Birthplace
- Visalia, CA, USA
- Country
- United States
- Nationality
- Not independently established
- Known for
- Explaining fractional quantum Hall behaviour through a correlated quantum-fluid state
Why this life matters
Explaining fractional quantum Hall behaviour through a correlated quantum-fluid state
Timeline
Key moments
Birth
Robert Laughlin was born in Visalia, CA, USA.
Quantum-fluid proposal
Published a variational many-electron account of the fractional quantum Hall state.
Nobel recognition
Received Nobel recognition for the work described in the official award record.
A route into many-body physics
Robert Laughlin was born in Visalia, California, in 1950. Undergraduate study at Berkeley exposed him to teachers including Charles Kittel and Owen Chamberlain. After military service he entered MIT graduate school in 1974 and pursued solid-state physics. His autobiography describes learning through calculations tied to experimental problems, rather than treating mathematical elegance alone as a sufficient guide. This formation shaped his later interest in how complicated behaviour could arise from the collective motion of many particles.
Learning from semiconductor experiments
At Bell Laboratories, Laughlin encountered a dense community of semiconductor researchers and learned about two-dimensional electron transport from Daniel Tsui. Work at Lawrence Livermore followed. The unexpected fractional quantum Hall effect created a problem that could not be understood by treating the electrons as independent. Laughlin used small-system calculations and a proposed many-electron wavefunction to investigate a collective state. His recollection emphasises dialogue with experimentalists and other theorists, including the value of known many-body methods in developing the new account.
A quantum fluid with unusual excitations
The 1983 paper proposed variational ground-state and excited-state wavefunctions for a two-dimensional electron system. The resulting description connected a correlated quantum liquid with fractionally charged excitations. The distinction is essential: the claim did not mean that an isolated elementary electron had been mechanically cut into pieces. It concerned the behaviour of excitations within an interacting system. Later theoretical work, including Duncan Haldane’s hierarchy formulation, extended the landscape beyond the simplest fractional states described by Laughlin’s original construction.
A Nobel for a collective state
Laughlin shared the 1998 Nobel Prize in Physics with Horst Störmer and Tsui for the discovery of a new quantum fluid with fractionally charged excitations. His later Stanford work continued a broad interest in collective physical behaviour. His contribution illustrates a productive relationship between experiment and theory: an unexpected transport result posed a problem, and a deliberately correlated mathematical state supplied an explanation with further consequences. Reading the original proposal, its later extensions and the experimental record separately preserves the particular achievement of each.
Quick answers
Frequently asked questions about Robert Laughlin
- Who shared Laughlin’s Nobel Prize?
- Horst Störmer and Daniel Tsui, whose experimental work revealed the fractional quantum Hall effect.
- Where was the 1983 paper affiliated?
- Lawrence Livermore National Laboratory; the original paper’s affiliation is preferred to compressed retrospective summaries.
Keep exploring
Lives connected to this story
- Philip Anderson
Compare different theoretical approaches to collective behaviour in condensed matter.
- Daniel Tsui
Distinguish the 1982 transport discovery from the 1983 theoretical explanation.
Sources and further reading
Explore the evidence
These references support the biography and offer further reading. Official records, first-person accounts and independent reporting provide different perspectives; image records document attribution and licensing.
- 1. Physical Review Letters, 1983Anomalous Quantum Hall Effect: An Incompressible Quantum Fluid with Fractionally Charged Excitations
- 2. Royal Swedish Academy of Sciences, 1998Additional background material on the Nobel Prize in Physics 1998
The background text’s compressed Bell Labs wording is not used to override the original 1983 paper’s Lawrence Livermore affiliation.
- 3. F. D. M. Haldane, Physical Review Letters, 1983Fractional Quantization of the Hall Effect: A Hierarchy of Incompressible Quantum Fluid States
- 4. Nobel Prize OutreachRobert Laughlin — Facts
- 5. Nobel Prize OutreachRobert Laughlin — Biographical