Errata for the Prepublication Draft of Quantum Field Theory

Mark Srednicki — ms-qft-DRAFT.pdf (2006)

This errata is for the freely available prepublication draft, using the draft’s printed page numbers. It is adapted from the author’s errata for the published book and checked against the draft text. Corrections explicitly identified as publication-only are omitted.

Last checked: 12 September 2026 · 168 correction entries on 119 draft pages

Sources: draft PDF · author’s errata by page · author’s errata by date

22, 33, 42, 44, 65, 72, 73, 76, 82, 87, 88, 96, 113, 114, 115, 121, 126, 133, 139, 141, 149, 163, 181, 184, 185, 187, 189, 191, 192, 193, 200, 202, 203, 204, 206, 207, 211, 219, 220, 226, 236, 237, 238, 252, 267, 268, 279, 281, 285, 288, 290, 302, 303, 305, 306, 311, 312, 321, 322, 327, 339, 340, 359, 361, 373, 379, 382, 387, 389, 390, 393, 394, 396, 397, 398, 404, 405, 410, 415, 427, 428, 436, 437, 445, 449, 450, 451, 452, 454, 455, 457, 470, 490, 500, 501, 503, 510, 511, 512, 513, 514, 518, 520, 521, 524, 526, 530, 534, 542, 543, 557, 568, 579, 596, 598, 602, 603, 606, 615

p. 22

§1, opening discussion: “this requires” → “the simplest possibility is for”.
Eq. (1.18): a^μ → a^σ.
Eq. (1.22): Λ^μ_σ → Λ^ν_σ.

p. 33

§2, second line: P^0 → cP^0.
Eq. (2.19): 3rd line: ℏ → ℏc; 4th line: ℏ → ℏ/c.
after Eq. (2.22): Hct → Ht.

p. 42

Eq. (3.26), line 7: reverse both exponential signs.
Eq. (3.27): x in exponent should be bold.

p. 44

§3, fourth line: ℏcm → ℏm/c.

p. 65

Eqs. (7.2)–(7.3): D in Dq should be calligraphic.

p. 72

Eq. (9.4): restore the missing gradient term.

p. 73

before Eq. (9.8): reference (9.7) → (9.6).
near bottom of page: reference (9.7) → (9.6).

p. 76

footnote near Eq. (9.16): W₁(J) has both real and imaginary parts.

p. 82

Eq. (9.25): Z₁(J) includes the Y counterterm.

p. 87

Eq. (10.3), line 2: − → +.
after Eq. (10.3): δ_j W → δ_j iW.

p. 88

Eq. (10.4), first line: evaluate RHS at J=0.

p. 96

Eq. (11.23): summation subscript j=1 → i=1.

p. 113

below Eq. (14.14): clockwise → counterclockwise.
Eq. (14.21), line 2: +A → −A.
near page bottom: Z=1+A → Z_φ=1+A.

p. 114

Eq. (14.25) denominator: 2^n → 2^(2n).

p. 115

above Eq. (14.30): reference (14.26) → (14.27).

p. 121

Eqs. (15.12)–(15.13): +Re → −Re.

p. 126

Problem 16.1: V₄=λ → V₄=−λ.

p. 133

§18, paragraph 3: replace the two-sentence 1PI-subdiagram criterion by the corrected omission criterion.

p. 139

Eq. (21.1), first RHS line: add overall minus sign; delete x from denominator.

p. 141

Eqs. (21.15)–(21.17): d⁶y → dᵈy.

p. 149

above Eq. (22.28): remove both RHS minus signs.

p. 163

after Eq. (25.13): m_χ²/k² → 4m_χ²/k².
near page bottom: internal propagator cannot be χ (no χ³ vertex).
near bottom: Im ln D: −iπ → −π.

p. 181

after Eq. (28.23): reference (28.12) → (28.11).
Eqs. (28.30)–(28.31): e^(ikx) → e^(−ikx).

p. 184

Eqs. (28.44), (28.46): swap exponents −1 and −1/2 on Z_φ and Z_χ.

p. 185

Eq. (29.4): −∫Jφ → +∫Jφ.

p. 187

Eq. (29.9): −∫Jφ → +∫Jφ.

p. 189

Eq. (29.23): 16π² → 32π².

p. 191

Eq. (29.32): 16π² → 32π².

p. 192

references near bottom: (29.33) → (29.35).

p. 193

§29, paragraph 2: “coefficients of the operators with negative mass dimension” → “coefficients with negative mass dimension”.

p. 200

Eqs. (31.2)–(31.4): Δ̃(0) → Δ(0).

p. 202

Eq. (31.14), first line: (3/4)Z_λ−(1/4)Z_m → (3/2)Z_λ−(1/2)Z_m.
Eq. (31.17): Δ̃(0) → Δ(0).
after Eq. (31.18); Eq. (31.19): κ_B−κ_C → κ_B−3κ_C.

p. 203

Eqs. (31.20)–(31.21): (3/4)C−(1/4)B → (3/2)C−(1/2)B.
Eq. (31.21), line 3: λ → 3λ.
Eq. (31.22): insert factor 3 before integral; +(1/2)(9κ_C−κ_B) → −(9κ_C−κ_B).
discussion after Eq. (31.22): Π(k²) depends on k² through D; include finite O(λ) A-counterterm fixed by Π′(−m²)=0.

p. 204

first full paragraph: Fig. (31.1) → Fig. (31.2).

p. 206

below Eq. (32.9): χ(x)+α → χ(x)+vα.
near page bottom: Π(0)=0 → Π_χ(0)=0.

p. 207

after Eq. (32.12): “where φ runs” → “where a runs”.

p. 211

Eq. (33.3), LHS: A^ρ(x) → A^μ(x).

p. 219

after Eq. (34.31): Levi-Civita spelling.

p. 220

Eq. (34.34), RHS: −i → +i.

p. 226

§36, third line: ψ → ψ_a.

p. 236

Eq. (37.3), line 2: insert ∂₀ acting on ψ_a.

p. 237

after Eq. (37.12): reference (37.5) → (37.4) and (37.5).

p. 238

after Eq. (37.20): reference (37.5) → (37.4) and (37.5).

p. 252

Eqs. (39.39)–(39.40): valid as written only for boosts parallel to p; otherwise include spin rotation R_ss′.

p. 267

Eqs. (41.24)–(41.25): spinor momentum p should be bold.
Problem 41.1: refer to (41.24), (41.25), not (41.23), (41.26).

p. 268

last line: state that the fields anticommute at spacelike separation.

p. 279

above Eq. (44.23): add “dropping the primes”.

p. 281

above Eq. (44.37): add “dropping the primes”.
after Eq. (44.37): z̄ → z̄_i.

p. 285

Eq. (45.8): S(x−w₁)S(w₁−w₂)S(w₂−y) → S(x−w₂)S(w₂−w₁)S(w₁−y).

p. 288

Fig. 45.5: internal momenta: −p−k and −p+k′.
Eq. (45.19): −ipy → −ip′y.
Eq. (45.21): −ikz₂ → −ik′z₂.

p. 290

Fig. 45.6: second internal line solid; k_i → k′_i.
Eq. (45.25), last term: −u+M² → −s+M².

p. 302

last line: “overall minus sign” → “factor −1/2”.

p. 303

§49, paragraph 1: ig → ig∫d⁴x.
Eq. (49.5): remove extra e^(−ip′x).
below Eq. (49.5): put left arrow over RHS ∂.

p. 305

footnote: remove references to nonexistent problems.

p. 306

Fig. 49.1: lower solid-line label: −p′₂ → p′₂.
above Eq. (49.6): iT₁=ig ū′₁v′₂; iT₂=ig ū′₂v′₁.
Eq. (49.6): swap u and v throughout.

p. 311

below Eq. (50.15): −(p⁰)²+p² → (p⁰)²−p².

p. 312

Eq. (50.24), lines 2–3: use (Φ_a Φ*_{ȧ})(κ*^{ȧ}κ^a)=p_{aȧ}k^{ȧa}.
after Eq. (50.24): section 44 → section 45.

p. 321

Eq. (51.39): integrate over 4 dimensions, not d.

p. 322

Fig. 51.4: momentum ℓ on leftmost internal propagator.
Eq. (51.51): λ → λ².

p. 327

§53, line 8: section 70 → section 71.

p. 339

Eq. (54.22), line 2: first RHS term gets + sign.

p. 340

Eq. (56.6): e^(ikx) → e^(−ikx).

p. 359

two references to Fig. 60.2: Fig. 60.2 → Fig. 60.1.

p. 361

above Eq. (60.30): /k₃ → /p₁.

p. 373

last line: ⟨0|φ(x)|k⟩ → ⟨k′|φ(x)|0⟩.

p. 379

Eq. (63.6): +m in final factor.

p. 382

Eq. (63.21): 1−y(1−y)… → 1+y(1−y)….

p. 387

after Eq. (65.11): D=(1−y²/4)… → D=(1/4−y²)….
next line: even → odd.

p. 389

paragraph near end: −p′² → +p′².
Eq. (65.19), line 3: −iλ → −iZ_λλ.

p. 390

Eq. (65.20), line 3: d⁴ℓ/(2π)⁴ → dᵈℓ/(2π)ᵈ.

p. 393

Eq. (65.5), line 2: insert factor 1/i.

p. 394

Eq. (65.34), line 2: P_ρμ → P_σμ.

p. 396

Eqs. (66.13)–(66.15): Z_φ → Z₂.
Eq. (66.14): Z₃ and Z₂ exponents: −2 → −1.

p. 397

Eqs. (66.23)–(66.24): last-term e → ε.
Eq. (66.25): 24 → 48.
Eq. (66.28): −6 → −12.

p. 398

Eq. (66.31): min → max.
Problem 66.2: append “in Lorenz gauge”.

p. 404

Eq. (68.3): insert Z₁ on RHS.

p. 405

after Eq. (68.13): Ŝ(p) → Ŝ(p)⁻¹.

p. 410

Eq. (69.24): add index i to fields in mass term.

p. 415

below Eq. (70.3): replace claim by T_A^a=−(T_A^a)*.
Eq. (70.20): swap + and − signs.
after Eq. (70.20): “This existence” → “The existence”.

p. 427

Eq. (73.1), line 3: C ghost fields → lowercase c.

p. 428

Fig. 73.2, second diagram: swap ρ and ν.

p. 436

Eq. (74.1): D^{ab} → D^{ab}_μ.

p. 437

Eq. (74.8): − → +.

p. 445

Eq. (75.10): numerator /p → −/p.

p. 449

Eq. (75.29): remove +(p,μ↔q,ν); perform exchange before p_μ contraction.

p. 450

Eq. (75.33): +(p,μ↔q,ν) → −(ν,ℓ↔ρ,−ℓ).

p. 451

Eq. (75.44): +(p,μ↔q,ν) → −(ν↔ρ).
Eq. (75.45): insert RHS minus sign.
Eq. (75.46): slash each a in numerator.

p. 452

Eqs. (75.48)–(75.49): (ℓ+a−q),(ℓ−q) → (ℓ+a+q),(ℓ+q).

p. 454

§75: SO(2), SO(6) can have A(R)≠0.

p. 455

Eq. (76.3): remove adjoint index a from F_μν.

p. 457

Eq. (76.21): second μ on RHS → ν.

p. 470

Eq. (78.32): raise all final g and δ indices.
last line: A in T(A) roman, not italic.

p. 490

Problem 81.2: 3− 4+ → 3+ 4−.

p. 500

Eq. (82.38): c(g)=−½β(g)c′(g).

p. 501

Eqs. (82.40)–(82.41): exp(+1…) → exp(−1…).

p. 503

§83, paragraph 1: “one third of” → “three times”.

p. 510

Eq. (83.5): last RHS index i → j.

p. 511

Eq. (83.9): use a particular low-energy state, not |0⟩.

p. 512

before Eq. (83.16): reference (83.7) → (83.9).

p. 513

above Eq. (84.9): g_a → g.
above Eq. (84.9): d(R) → D(R).

p. 514

after Eq. (83.25): Problem 11.5 → Problem 10.5.
near page bottom: φ^aT^a → Φ^aT^a.
near page bottom: “VEV of φ” → “VEV of Φ”.

p. 518

Eq. (85.14): remove superscript μ.

p. 520

Eq. (85.23), last line: g → g² in first term.

p. 521

Eqs. (85.34)–(85.35): +(1−ξ⁻¹) → −(1−ξ⁻¹).

p. 524

Eq. (86.6): last RHS index k → i.

p. 526

Eqs. (86.25)–(86.27): R,S → Rᵀ,Sᵀ.

p. 530

§87, paragraph 3: “87 and 88” → “88 and 89”.

p. 534

§88, line 2: Table 88.2 → Table 88.1.

p. 542

Eq. (89.1), first line: q_{βj} → q_{αj}.

p. 543

§89, first line: ū,d̄ each get color superscript α.
Eq. (89.31): D_LK → D_LJ.

p. 557

Eq. (91.13): E_LK → E_LJ.

p. 568

below Eq. (92.50): K_aK_i → eK_aK_i.

p. 579

last line: U(φ)=exp[iα(φ)].
Eq. (93.40) exponent: i n_- → n_-.

p. 596

Eq. (95.41): first RHS term → A†(x).

p. 598

after Eq. (95.69): D in D_aV should be calligraphic.
Eq. (95.71): superscript c → b.

p. 602

bibliographic spelling: Iliopoulos.

p. 603

Eq. (96.1): insert ε^{ij} in terms 2–3; H̄^i → H̄_j in term 3.
below Eq. (96.1): H̄^iL_i → ε^{ij}H̄_iL_j.

p. 606

Eq. (97.4): last terms: (1,3,+1)_S and (1,1,+1)_A.
Eq. (97.6): last term → (1,1,+1).
after Eq. (97.6): reference (97.2) → (97.3).

p. 615

bibliographic spelling: Ta-Pei Cheng.

Scope and exclusions

This page is intended as a practical errata for readers of the 2006 draft. Obvious spelling and grammar slips not individually listed by the author are not exhaustively catalogued. Two Takahashi misspellings explicitly described by Srednicki as publisher-introduced and absent from his original draft are excluded, as are published-book index corrections with no draft counterpart.

Reporting additional errors

Srednicki’s page asks readers who find further errors to contact him at the address printed on the draft. A public mirror of this errata should link to the draft on the author’s site rather than redistribute the PDF.