monopole.bar

where field lines converge

The Prediction
Dirac 1931
Monopoles
QFT
The Search
Topology
The Promise
Gauge

The Library

Every bar has its regulars. Ours are looking for something that shouldn't exist.

N

Radial field of a magnetic monopole

“One would be surprised if Nature had made no use of it.”— P.A.M. Dirac, 1931

The Counter

Every cocktail tells a story of symmetry — broken and unbroken.

The Dirac String

Aged rum, honey, lemon, a thread of saffron

't Hooft-Polyakov

Bourbon, amaro, walnut bitters, smoke

Cabrera's Signal

Gin, elderflower, a single ice sphere

1931 — Dirac proposes magnetic monopole 1974 — 't Hooft & Polyakov find monopole solutions in gauge theory 1982 — Cabrera detects a single candidate event 1984 — Grand Unified Theories predict superheavy monopoles 2009 — Spin ice “monopoles” observed in condensed matter 2025 — The search continues… 1931 — Dirac proposes magnetic monopole 1974 — 't Hooft & Polyakov find monopole solutions in gauge theory 1982 — Cabrera detects a single candidate event 1984 — Grand Unified Theories predict superheavy monopoles 2009 — Spin ice “monopoles” observed in condensed matter 2025 — The search continues…
∇ · B = ρm g = nħc / 2e ∮ B · dA = μ₀g
DIRAC STRING string singularity

Dirac string extending to infinity

't HOOFT-POLYAKOV

Non-singular monopole in gauge theory

Φ₀ time Feb 14, 1982

Cabrera's flux quantum jump

CHARGE QUANTIZATION eg = nħc/2 if g exists, e is quantized the most elegant explanation

Dirac quantization condition

Last Call

The monopole has never been found. But the search itself is magnificent.

monopole.bar